2 LINUX ALLOCATED DEVICES (2.6+ version)
4 Maintained by Alan Cox <device@lanana.org>
6 Last revised: 6th April 2009
8 This list is the Linux Device List, the official registry of allocated
9 device numbers and /dev directory nodes for the Linux operating
12 The latest version of this list is available from
13 http://www.lanana.org/docs/device-list/ or
14 ftp://ftp.kernel.org/pub/linux/docs/device-list/. This version may be
15 newer than the one distributed with the Linux kernel.
17 The LaTeX version of this document is no longer maintained.
19 This document is included by reference into the Filesystem Hierarchy
20 Standard (FHS). The FHS is available from http://www.pathname.com/fhs/.
22 Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
23 platform only. Allocations marked (68k/Atari) apply to Linux/68k on
24 the Atari platform only.
26 The symbol {2.6} means the allocation is obsolete and scheduled for
27 removal once kernel version 2.6 (or equivalent) is released. Some of these
28 allocations have already been removed.
30 This document is in the public domain. The author requests, however,
31 that semantically altered versions are not distributed without
32 permission of the author, assuming the author can be contacted without
33 an unreasonable effort.
35 In particular, please don't sent patches for this list to Linus, at
36 least not without contacting me first.
38 I do not have any information about these devices beyond what appears
39 on this list. Any such information requests will be deleted without
43 **** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
45 To have a major number allocated, or a minor number in situations
46 where that applies (e.g. busmice), please contact me with the
47 appropriate device information. Also, if you have additional
48 information regarding any of the devices listed below, or if I have
49 made a mistake, I would greatly appreciate a note.
51 I do, however, make a few requests about the nature of your report.
52 This is necessary for me to be able to keep this list up to date and
53 correct in a timely manner. First of all, *please* send it to the
54 correct address... <device@lanana.org>. I receive hundreds of email
55 messages a day, so mail sent to other addresses may very well get lost
56 in the avalanche. Please put in a descriptive subject, so I can find
57 your mail again should I need to. Too many people send me email
58 saying just "device number request" in the subject.
60 Second, please include a description of the device *in the same format
61 as this list*. The reason for this is that it is the only way I have
62 found to ensure I have all the requisite information to publish your
63 device and avoid conflicts.
65 Third, please don't assume that the distributed version of the list is
66 up to date. Due to the number of registrations I have to maintain it
67 in "batch mode", so there is likely additional registrations that
68 haven't been listed yet.
70 Fourth, remember that Linux now has extensive support for dynamic allocation
71 of device numbering and can use sysfs and udev to handle the naming needs.
72 There are still some exceptions in the serial and boot device area. Before
73 asking for a device number make sure you actually need one.
75 Finally, sometimes I have to play "namespace police." Please don't be
76 offended. I often get submissions for /dev names that would be bound
77 to cause conflicts down the road. I am trying to avoid getting in a
78 situation where we would have to suffer an incompatible forward
79 change. Therefore, please consult with me *before* you make your
80 device names and numbers in any way public, at least to the point
81 where it would be at all difficult to get them changed.
83 Your cooperation is appreciated.
86 0 Unnamed devices (e.g. non-device mounts)
87 0 = reserved as null device number
88 See block major 144, 145, 146 for expansion areas.
91 1 = /dev/mem Physical memory access
92 2 = /dev/kmem Kernel virtual memory access
93 3 = /dev/null Null device
94 4 = /dev/port I/O port access
95 5 = /dev/zero Null byte source
96 6 = /dev/core OBSOLETE - replaced by /proc/kcore
97 7 = /dev/full Returns ENOSPC on write
98 8 = /dev/random Nondeterministic random number gen.
99 9 = /dev/urandom Faster, less secure random number gen.
100 10 = /dev/aio Asynchronous I/O notification interface
101 11 = /dev/kmsg Writes to this come out as printk's, reads
102 export the buffered printk records.
103 12 = /dev/oldmem OBSOLETE - replaced by /proc/vmcore
106 0 = /dev/ram0 First RAM disk
107 1 = /dev/ram1 Second RAM disk
109 250 = /dev/initrd Initial RAM disk
111 Older kernels had /dev/ramdisk (1, 1) here.
112 /dev/initrd refers to a RAM disk which was preloaded
113 by the boot loader; newer kernels use /dev/ram0 for
116 2 char Pseudo-TTY masters
117 0 = /dev/ptyp0 First PTY master
118 1 = /dev/ptyp1 Second PTY master
120 255 = /dev/ptyef 256th PTY master
122 Pseudo-tty's are named as follows:
123 * Masters are "pty", slaves are "tty";
124 * the fourth letter is one of pqrstuvwxyzabcde indicating
125 the 1st through 16th series of 16 pseudo-ttys each, and
126 * the fifth letter is one of 0123456789abcdef indicating
127 the position within the series.
129 These are the old-style (BSD) PTY devices; Unix98
130 devices are on major 128 and above and use the PTY
131 master multiplex (/dev/ptmx) to acquire a PTY on
135 0 = /dev/fd0 Controller 0, drive 0, autodetect
136 1 = /dev/fd1 Controller 0, drive 1, autodetect
137 2 = /dev/fd2 Controller 0, drive 2, autodetect
138 3 = /dev/fd3 Controller 0, drive 3, autodetect
139 128 = /dev/fd4 Controller 1, drive 0, autodetect
140 129 = /dev/fd5 Controller 1, drive 1, autodetect
141 130 = /dev/fd6 Controller 1, drive 2, autodetect
142 131 = /dev/fd7 Controller 1, drive 3, autodetect
144 To specify format, add to the autodetect device number:
145 0 = /dev/fd? Autodetect format
146 4 = /dev/fd?d360 5.25" 360K in a 360K drive(1)
147 20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1)
148 48 = /dev/fd?h410 5.25" 410K in a 1200K drive
149 64 = /dev/fd?h420 5.25" 420K in a 1200K drive
150 24 = /dev/fd?h720 5.25" 720K in a 1200K drive
151 80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1)
152 8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1)
153 40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1)
154 56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive
155 72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive
156 92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1)
158 12 = /dev/fd?u360 3.5" 360K Double Density(2)
159 16 = /dev/fd?u720 3.5" 720K Double Density(1)
160 120 = /dev/fd?u800 3.5" 800K Double Density(2)
161 52 = /dev/fd?u820 3.5" 820K Double Density
162 68 = /dev/fd?u830 3.5" 830K Double Density
163 84 = /dev/fd?u1040 3.5" 1040K Double Density(1)
164 88 = /dev/fd?u1120 3.5" 1120K Double Density(1)
165 28 = /dev/fd?u1440 3.5" 1440K High Density(1)
166 124 = /dev/fd?u1600 3.5" 1600K High Density(1)
167 44 = /dev/fd?u1680 3.5" 1680K High Density(3)
168 60 = /dev/fd?u1722 3.5" 1722K High Density
169 76 = /dev/fd?u1743 3.5" 1743K High Density
170 96 = /dev/fd?u1760 3.5" 1760K High Density
171 116 = /dev/fd?u1840 3.5" 1840K High Density(3)
172 100 = /dev/fd?u1920 3.5" 1920K High Density(1)
173 32 = /dev/fd?u2880 3.5" 2880K Extra Density(1)
174 104 = /dev/fd?u3200 3.5" 3200K Extra Density
175 108 = /dev/fd?u3520 3.5" 3520K Extra Density
176 112 = /dev/fd?u3840 3.5" 3840K Extra Density(1)
178 36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete?
180 (1) Autodetectable format
181 (2) Autodetectable format in a Double Density (720K) drive only
182 (3) Autodetectable format in a High Density (1440K) drive only
184 NOTE: The letter in the device name (d, q, h or u)
185 signifies the type of drive: 5.25" Double Density (d),
186 5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
187 (any model, u). The use of the capital letters D, H
188 and E for the 3.5" models have been deprecated, since
189 the drive type is insignificant for these devices.
191 3 char Pseudo-TTY slaves
192 0 = /dev/ttyp0 First PTY slave
193 1 = /dev/ttyp1 Second PTY slave
195 255 = /dev/ttyef 256th PTY slave
197 These are the old-style (BSD) PTY devices; Unix98
198 devices are on major 136 and above.
200 3 block First MFM, RLL and IDE hard disk/CD-ROM interface
201 0 = /dev/hda Master: whole disk (or CD-ROM)
202 64 = /dev/hdb Slave: whole disk (or CD-ROM)
204 For partitions, add to the whole disk device number:
205 0 = /dev/hd? Whole disk
206 1 = /dev/hd?1 First partition
207 2 = /dev/hd?2 Second partition
209 63 = /dev/hd?63 63rd partition
211 For Linux/i386, partitions 1-4 are the primary
212 partitions, and 5 and above are logical partitions.
213 Other versions of Linux use partitioning schemes
214 appropriate to their respective architectures.
217 0 = /dev/tty0 Current virtual console
219 1 = /dev/tty1 First virtual console
221 63 = /dev/tty63 63rd virtual console
222 64 = /dev/ttyS0 First UART serial port
224 255 = /dev/ttyS191 192nd UART serial port
226 UART serial ports refer to 8250/16450/16550 series devices.
228 Older versions of the Linux kernel used this major
229 number for BSD PTY devices. As of Linux 2.1.115, this
230 is no longer supported. Use major numbers 2 and 3.
232 4 block Aliases for dynamically allocated major devices to be used
233 when its not possible to create the real device nodes
234 because the root filesystem is mounted read-only.
238 5 char Alternate TTY devices
239 0 = /dev/tty Current TTY device
240 1 = /dev/console System console
241 2 = /dev/ptmx PTY master multiplex
242 3 = /dev/ttyprintk User messages via printk TTY device
243 64 = /dev/cua0 Callout device for ttyS0
245 255 = /dev/cua191 Callout device for ttyS191
247 (5,1) is /dev/console starting with Linux 2.1.71. See
248 the section on terminal devices for more information
251 6 char Parallel printer devices
252 0 = /dev/lp0 Parallel printer on parport0
253 1 = /dev/lp1 Parallel printer on parport1
256 Current Linux kernels no longer have a fixed mapping
257 between parallel ports and I/O addresses. Instead,
258 they are redirected through the parport multiplex layer.
260 7 char Virtual console capture devices
261 0 = /dev/vcs Current vc text contents
262 1 = /dev/vcs1 tty1 text contents
264 63 = /dev/vcs63 tty63 text contents
265 128 = /dev/vcsa Current vc text/attribute contents
266 129 = /dev/vcsa1 tty1 text/attribute contents
268 191 = /dev/vcsa63 tty63 text/attribute contents
270 NOTE: These devices permit both read and write access.
272 7 block Loopback devices
273 0 = /dev/loop0 First loop device
274 1 = /dev/loop1 Second loop device
277 The loop devices are used to mount filesystems not
278 associated with block devices. The binding to the
279 loop devices is handled by mount(8) or losetup(8).
281 8 block SCSI disk devices (0-15)
282 0 = /dev/sda First SCSI disk whole disk
283 16 = /dev/sdb Second SCSI disk whole disk
284 32 = /dev/sdc Third SCSI disk whole disk
286 240 = /dev/sdp Sixteenth SCSI disk whole disk
288 Partitions are handled in the same way as for IDE
289 disks (see major number 3) except that the limit on
292 9 char SCSI tape devices
293 0 = /dev/st0 First SCSI tape, mode 0
294 1 = /dev/st1 Second SCSI tape, mode 0
296 32 = /dev/st0l First SCSI tape, mode 1
297 33 = /dev/st1l Second SCSI tape, mode 1
299 64 = /dev/st0m First SCSI tape, mode 2
300 65 = /dev/st1m Second SCSI tape, mode 2
302 96 = /dev/st0a First SCSI tape, mode 3
303 97 = /dev/st1a Second SCSI tape, mode 3
305 128 = /dev/nst0 First SCSI tape, mode 0, no rewind
306 129 = /dev/nst1 Second SCSI tape, mode 0, no rewind
308 160 = /dev/nst0l First SCSI tape, mode 1, no rewind
309 161 = /dev/nst1l Second SCSI tape, mode 1, no rewind
311 192 = /dev/nst0m First SCSI tape, mode 2, no rewind
312 193 = /dev/nst1m Second SCSI tape, mode 2, no rewind
314 224 = /dev/nst0a First SCSI tape, mode 3, no rewind
315 225 = /dev/nst1a Second SCSI tape, mode 3, no rewind
318 "No rewind" refers to the omission of the default
319 automatic rewind on device close. The MTREW or MTOFFL
320 ioctl()'s can be used to rewind the tape regardless of
321 the device used to access it.
323 9 block Metadisk (RAID) devices
324 0 = /dev/md0 First metadisk group
325 1 = /dev/md1 Second metadisk group
328 The metadisk driver is used to span a
329 filesystem across multiple physical disks.
331 10 char Non-serial mice, misc features
332 0 = /dev/logibm Logitech bus mouse
333 1 = /dev/psaux PS/2-style mouse port
334 2 = /dev/inportbm Microsoft Inport bus mouse
335 3 = /dev/atibm ATI XL bus mouse
337 4 = /dev/amigamouse Amiga mouse (68k/Amiga)
338 5 = /dev/atarimouse Atari mouse
339 6 = /dev/sunmouse Sun mouse
340 7 = /dev/amigamouse1 Second Amiga mouse
341 8 = /dev/smouse Simple serial mouse driver
342 9 = /dev/pc110pad IBM PC-110 digitizer pad
343 10 = /dev/adbmouse Apple Desktop Bus mouse
344 11 = /dev/vrtpanel Vr41xx embedded touch panel
345 13 = /dev/vpcmouse Connectix Virtual PC Mouse
346 14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen
347 15 = /dev/touchscreen/mk712 MK712 touchscreen
348 128 = /dev/beep Fancy beep device
350 130 = /dev/watchdog Watchdog timer port
351 131 = /dev/temperature Machine internal temperature
352 132 = /dev/hwtrap Hardware fault trap
353 133 = /dev/exttrp External device trap
354 134 = /dev/apm_bios Advanced Power Management BIOS
355 135 = /dev/rtc Real Time Clock
356 139 = /dev/openprom SPARC OpenBoot PROM
357 140 = /dev/relay8 Berkshire Products Octal relay card
358 141 = /dev/relay16 Berkshire Products ISO-16 relay card
360 143 = /dev/pciconf PCI configuration space
361 144 = /dev/nvram Non-volatile configuration RAM
362 145 = /dev/hfmodem Soundcard shortwave modem control
363 146 = /dev/graphics Linux/SGI graphics device
364 147 = /dev/opengl Linux/SGI OpenGL pipe
365 148 = /dev/gfx Linux/SGI graphics effects device
366 149 = /dev/input/mouse Linux/SGI Irix emulation mouse
367 150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
368 151 = /dev/led Front panel LEDs
369 152 = /dev/kpoll Kernel Poll Driver
370 153 = /dev/mergemem Memory merge device
371 154 = /dev/pmu Macintosh PowerBook power manager
372 155 = /dev/isictl MultiTech ISICom serial control
373 156 = /dev/lcd Front panel LCD display
374 157 = /dev/ac Applicom Intl Profibus card
375 158 = /dev/nwbutton Netwinder external button
376 159 = /dev/nwdebug Netwinder debug interface
377 160 = /dev/nwflash Netwinder flash memory
378 161 = /dev/userdma User-space DMA access
379 162 = /dev/smbus System Management Bus
380 163 = /dev/lik Logitech Internet Keyboard
381 164 = /dev/ipmo Intel Intelligent Platform Management
382 165 = /dev/vmmon VMware virtual machine monitor
383 166 = /dev/i2o/ctl I2O configuration manager
384 167 = /dev/specialix_sxctl Specialix serial control
385 168 = /dev/tcldrv Technology Concepts serial control
386 169 = /dev/specialix_rioctl Specialix RIO serial control
387 170 = /dev/thinkpad/thinkpad IBM Thinkpad devices
388 171 = /dev/srripc QNX4 API IPC manager
389 172 = /dev/usemaclone Semaphore clone device
390 173 = /dev/ipmikcs Intelligent Platform Management
391 174 = /dev/uctrl SPARCbook 3 microcontroller
392 175 = /dev/agpgart AGP Graphics Address Remapping Table
393 176 = /dev/gtrsc Gorgy Timing radio clock
394 177 = /dev/cbm Serial CBM bus
395 178 = /dev/jsflash JavaStation OS flash SIMM
396 179 = /dev/xsvc High-speed shared-mem/semaphore service
397 180 = /dev/vrbuttons Vr41xx button input device
398 181 = /dev/toshiba Toshiba laptop SMM support
399 182 = /dev/perfctr Performance-monitoring counters
400 183 = /dev/hwrng Generic random number generator
401 184 = /dev/cpu/microcode CPU microcode update interface
402 186 = /dev/atomicps Atomic shapshot of process state data
403 187 = /dev/irnet IrNET device
404 188 = /dev/smbusbios SMBus BIOS
405 189 = /dev/ussp_ctl User space serial port control
406 190 = /dev/crash Mission Critical Linux crash dump facility
407 191 = /dev/pcl181 <information missing>
408 192 = /dev/nas_xbus NAS xbus LCD/buttons access
409 193 = /dev/d7s SPARC 7-segment display
410 194 = /dev/zkshim Zero-Knowledge network shim control
411 195 = /dev/elographics/e2201 Elographics touchscreen E271-2201
412 196 = /dev/vfio/vfio VFIO userspace driver interface
413 197 = /dev/pxa3xx-gcu PXA3xx graphics controller unit driver
414 198 = /dev/sexec Signed executable interface
415 199 = /dev/scanners/cuecat :CueCat barcode scanner
416 200 = /dev/net/tun TAP/TUN network device
417 201 = /dev/button/gulpb Transmeta GULP-B buttons
418 202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control
419 203 = /dev/cuse Cuse (character device in user-space)
420 204 = /dev/video/em8300 EM8300 DVD decoder control
421 205 = /dev/video/em8300_mv EM8300 DVD decoder video
422 206 = /dev/video/em8300_ma EM8300 DVD decoder audio
423 207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture
424 208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller
425 209 = /dev/compaq/cpqrid Compaq Remote Insight Driver
426 210 = /dev/impi/bt IMPI coprocessor block transfer
427 211 = /dev/impi/smic IMPI coprocessor stream interface
428 212 = /dev/watchdogs/0 First watchdog device
429 213 = /dev/watchdogs/1 Second watchdog device
430 214 = /dev/watchdogs/2 Third watchdog device
431 215 = /dev/watchdogs/3 Fourth watchdog device
432 216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel
433 217 = /dev/ni/natmotn National Instruments Motion
434 218 = /dev/kchuid Inter-process chuid control
435 219 = /dev/modems/mwave MWave modem firmware upload
436 220 = /dev/mptctl Message passing technology (MPT) control
437 221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver
438 222 = /dev/mvista/hasi Montavista PICMG high availability
439 223 = /dev/input/uinput User level driver support for input
440 224 = /dev/tpm TCPA TPM driver
441 225 = /dev/pps Pulse Per Second driver
442 226 = /dev/systrace Systrace device
443 227 = /dev/mcelog X86_64 Machine Check Exception driver
444 228 = /dev/hpet HPET driver
445 229 = /dev/fuse Fuse (virtual filesystem in user-space)
446 230 = /dev/midishare MidiShare driver
447 231 = /dev/snapshot System memory snapshot device
448 232 = /dev/kvm Kernel-based virtual machine (hardware virtualization extensions)
449 233 = /dev/kmview View-OS A process with a view
450 234 = /dev/btrfs-control Btrfs control device
451 235 = /dev/autofs Autofs control device
452 236 = /dev/mapper/control Device-Mapper control device
453 237 = /dev/loop-control Loopback control device
454 238 = /dev/vhost-net Host kernel accelerator for virtio net
455 239 = /dev/uhid User-space I/O driver support for HID subsystem
457 240-254 Reserved for local use
458 255 Reserved for MISC_DYNAMIC_MINOR
460 11 char Raw keyboard device (Linux/SPARC only)
461 0 = /dev/kbd Raw keyboard device
463 11 char Serial Mux device (Linux/PA-RISC only)
464 0 = /dev/ttyB0 First mux port
465 1 = /dev/ttyB1 Second mux port
468 11 block SCSI CD-ROM devices
469 0 = /dev/scd0 First SCSI CD-ROM
470 1 = /dev/scd1 Second SCSI CD-ROM
473 The prefix /dev/sr (instead of /dev/scd) has been deprecated.
476 2 = /dev/ntpqic11 QIC-11, no rewind-on-close
477 3 = /dev/tpqic11 QIC-11, rewind-on-close
478 4 = /dev/ntpqic24 QIC-24, no rewind-on-close
479 5 = /dev/tpqic24 QIC-24, rewind-on-close
480 6 = /dev/ntpqic120 QIC-120, no rewind-on-close
481 7 = /dev/tpqic120 QIC-120, rewind-on-close
482 8 = /dev/ntpqic150 QIC-150, no rewind-on-close
483 9 = /dev/tpqic150 QIC-150, rewind-on-close
485 The device names specified are proposed -- if there
486 are "standard" names for these devices, please let me know.
491 0 = /dev/input/js0 First joystick
492 1 = /dev/input/js1 Second joystick
494 32 = /dev/input/mouse0 First mouse
495 33 = /dev/input/mouse1 Second mouse
497 63 = /dev/input/mice Unified mouse
498 64 = /dev/input/event0 First event queue
499 65 = /dev/input/event1 Second event queue
502 Each device type has 5 bits (32 minors).
504 13 block Previously used for the XT disk (/dev/xdN)
505 Deleted in kernel v3.9.
507 14 char Open Sound System (OSS)
508 0 = /dev/mixer Mixer control
509 1 = /dev/sequencer Audio sequencer
510 2 = /dev/midi00 First MIDI port
511 3 = /dev/dsp Digital audio
512 4 = /dev/audio Sun-compatible digital audio
514 7 = /dev/audioctl SPARC audio control device
515 8 = /dev/sequencer2 Sequencer -- alternate device
516 16 = /dev/mixer1 Second soundcard mixer control
517 17 = /dev/patmgr0 Sequencer patch manager
518 18 = /dev/midi01 Second MIDI port
519 19 = /dev/dsp1 Second soundcard digital audio
520 20 = /dev/audio1 Second soundcard Sun digital audio
521 33 = /dev/patmgr1 Sequencer patch manager
522 34 = /dev/midi02 Third MIDI port
523 50 = /dev/midi03 Fourth MIDI port
528 0 = /dev/js0 First analog joystick
529 1 = /dev/js1 Second analog joystick
531 128 = /dev/djs0 First digital joystick
532 129 = /dev/djs1 Second digital joystick
534 15 block Sony CDU-31A/CDU-33A CD-ROM
535 0 = /dev/sonycd Sony CDU-31a CD-ROM
537 16 char Non-SCSI scanners
538 0 = /dev/gs4500 Genius 4500 handheld scanner
540 16 block GoldStar CD-ROM
541 0 = /dev/gscd GoldStar CD-ROM
543 17 char OBSOLETE (was Chase serial card)
544 0 = /dev/ttyH0 First Chase port
545 1 = /dev/ttyH1 Second Chase port
547 17 block Optics Storage CD-ROM
548 0 = /dev/optcd Optics Storage CD-ROM
550 18 char OBSOLETE (was Chase serial card - alternate devices)
551 0 = /dev/cuh0 Callout device for ttyH0
552 1 = /dev/cuh1 Callout device for ttyH1
554 18 block Sanyo CD-ROM
555 0 = /dev/sjcd Sanyo CD-ROM
557 19 char Cyclades serial card
558 0 = /dev/ttyC0 First Cyclades port
560 31 = /dev/ttyC31 32nd Cyclades port
562 19 block "Double" compressed disk
563 0 = /dev/double0 First compressed disk
565 7 = /dev/double7 Eighth compressed disk
566 128 = /dev/cdouble0 Mirror of first compressed disk
568 135 = /dev/cdouble7 Mirror of eighth compressed disk
570 See the Double documentation for the meaning of the
573 20 char Cyclades serial card - alternate devices
574 0 = /dev/cub0 Callout device for ttyC0
576 31 = /dev/cub31 Callout device for ttyC31
578 20 block Hitachi CD-ROM (under development)
579 0 = /dev/hitcd Hitachi CD-ROM
581 21 char Generic SCSI access
582 0 = /dev/sg0 First generic SCSI device
583 1 = /dev/sg1 Second generic SCSI device
586 Most distributions name these /dev/sga, /dev/sgb...;
587 this sets an unnecessary limit of 26 SCSI devices in
588 the system and is counter to standard Linux
589 device-naming practice.
591 21 block Acorn MFM hard drive interface
592 0 = /dev/mfma First MFM drive whole disk
593 64 = /dev/mfmb Second MFM drive whole disk
595 This device is used on the ARM-based Acorn RiscPC.
596 Partitions are handled the same way as for IDE disks
597 (see major number 3).
599 22 char Digiboard serial card
600 0 = /dev/ttyD0 First Digiboard port
601 1 = /dev/ttyD1 Second Digiboard port
603 22 block Second IDE hard disk/CD-ROM interface
604 0 = /dev/hdc Master: whole disk (or CD-ROM)
605 64 = /dev/hdd Slave: whole disk (or CD-ROM)
607 Partitions are handled the same way as for the first
608 interface (see major number 3).
610 23 char Digiboard serial card - alternate devices
611 0 = /dev/cud0 Callout device for ttyD0
612 1 = /dev/cud1 Callout device for ttyD1
614 23 block Mitsumi proprietary CD-ROM
615 0 = /dev/mcd Mitsumi CD-ROM
617 24 char Stallion serial card
618 0 = /dev/ttyE0 Stallion port 0 card 0
619 1 = /dev/ttyE1 Stallion port 1 card 0
621 64 = /dev/ttyE64 Stallion port 0 card 1
622 65 = /dev/ttyE65 Stallion port 1 card 1
624 128 = /dev/ttyE128 Stallion port 0 card 2
625 129 = /dev/ttyE129 Stallion port 1 card 2
627 192 = /dev/ttyE192 Stallion port 0 card 3
628 193 = /dev/ttyE193 Stallion port 1 card 3
630 24 block Sony CDU-535 CD-ROM
631 0 = /dev/cdu535 Sony CDU-535 CD-ROM
633 25 char Stallion serial card - alternate devices
634 0 = /dev/cue0 Callout device for ttyE0
635 1 = /dev/cue1 Callout device for ttyE1
637 64 = /dev/cue64 Callout device for ttyE64
638 65 = /dev/cue65 Callout device for ttyE65
640 128 = /dev/cue128 Callout device for ttyE128
641 129 = /dev/cue129 Callout device for ttyE129
643 192 = /dev/cue192 Callout device for ttyE192
644 193 = /dev/cue193 Callout device for ttyE193
646 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
647 0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
648 1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
649 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
650 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
654 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
655 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
656 1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
657 2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
658 3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
661 0 = /dev/qft0 Unit 0, rewind-on-close
662 1 = /dev/qft1 Unit 1, rewind-on-close
663 2 = /dev/qft2 Unit 2, rewind-on-close
664 3 = /dev/qft3 Unit 3, rewind-on-close
665 4 = /dev/nqft0 Unit 0, no rewind-on-close
666 5 = /dev/nqft1 Unit 1, no rewind-on-close
667 6 = /dev/nqft2 Unit 2, no rewind-on-close
668 7 = /dev/nqft3 Unit 3, no rewind-on-close
669 16 = /dev/zqft0 Unit 0, rewind-on-close, compression
670 17 = /dev/zqft1 Unit 1, rewind-on-close, compression
671 18 = /dev/zqft2 Unit 2, rewind-on-close, compression
672 19 = /dev/zqft3 Unit 3, rewind-on-close, compression
673 20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
674 21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
675 22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
676 23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
677 32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
678 33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
679 34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
680 35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
681 36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
682 37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
683 38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
684 39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
686 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
687 0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
688 1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
689 2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
690 3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
692 28 char Stallion serial card - card programming
693 0 = /dev/staliomem0 First Stallion card I/O memory
694 1 = /dev/staliomem1 Second Stallion card I/O memory
695 2 = /dev/staliomem2 Third Stallion card I/O memory
696 3 = /dev/staliomem3 Fourth Stallion card I/O memory
698 28 char Atari SLM ACSI laser printer (68k/Atari)
699 0 = /dev/slm0 First SLM laser printer
700 1 = /dev/slm1 Second SLM laser printer
702 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
703 0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
704 1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
705 2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
706 3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
708 28 block ACSI disk (68k/Atari)
709 0 = /dev/ada First ACSI disk whole disk
710 16 = /dev/adb Second ACSI disk whole disk
711 32 = /dev/adc Third ACSI disk whole disk
713 240 = /dev/adp 16th ACSI disk whole disk
715 Partitions are handled in the same way as for IDE
716 disks (see major number 3) except that the limit on
717 partitions is 15, like SCSI.
719 29 char Universal frame buffer
720 0 = /dev/fb0 First frame buffer
721 1 = /dev/fb1 Second frame buffer
723 31 = /dev/fb31 32nd frame buffer
725 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
726 0 = /dev/aztcd Aztech CD-ROM
728 30 char iBCS-2 compatibility devices
729 0 = /dev/socksys Socket access
730 1 = /dev/spx SVR3 local X interface
731 32 = /dev/inet/ip Network access
742 Additionally, iBCS-2 requires the following links:
744 /dev/ip -> /dev/inet/ip
745 /dev/icmp -> /dev/inet/icmp
746 /dev/ggp -> /dev/inet/ggp
747 /dev/ipip -> /dev/inet/ipip
748 /dev/tcp -> /dev/inet/tcp
749 /dev/egp -> /dev/inet/egp
750 /dev/pup -> /dev/inet/pup
751 /dev/udp -> /dev/inet/udp
752 /dev/idp -> /dev/inet/idp
753 /dev/rawip -> /dev/inet/rawip
754 /dev/inet/arp -> /dev/inet/udp
755 /dev/inet/rip -> /dev/inet/udp
756 /dev/nfsd -> /dev/socksys
757 /dev/X0R -> /dev/null (? apparently not required ?)
759 30 block Philips LMS CM-205 CD-ROM
760 0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
762 /dev/lmscd is an older name for this device. This
763 driver does not work with the CM-205MS CD-ROM.
766 0 = /dev/mpu401data MPU-401 data port
767 1 = /dev/mpu401stat MPU-401 status port
769 31 block ROM/flash memory card
770 0 = /dev/rom0 First ROM card (rw)
772 7 = /dev/rom7 Eighth ROM card (rw)
773 8 = /dev/rrom0 First ROM card (ro)
775 15 = /dev/rrom7 Eighth ROM card (ro)
776 16 = /dev/flash0 First flash memory card (rw)
778 23 = /dev/flash7 Eighth flash memory card (rw)
779 24 = /dev/rflash0 First flash memory card (ro)
781 31 = /dev/rflash7 Eighth flash memory card (ro)
783 The read-write (rw) devices support back-caching
784 written data in RAM, as well as writing to flash RAM
785 devices. The read-only devices (ro) support reading
788 32 char Specialix serial card
789 0 = /dev/ttyX0 First Specialix port
790 1 = /dev/ttyX1 Second Specialix port
792 32 block Philips LMS CM-206 CD-ROM
793 0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
795 33 char Specialix serial card - alternate devices
796 0 = /dev/cux0 Callout device for ttyX0
797 1 = /dev/cux1 Callout device for ttyX1
799 33 block Third IDE hard disk/CD-ROM interface
800 0 = /dev/hde Master: whole disk (or CD-ROM)
801 64 = /dev/hdf Slave: whole disk (or CD-ROM)
803 Partitions are handled the same way as for the first
804 interface (see major number 3).
806 34 char Z8530 HDLC driver
807 0 = /dev/scc0 First Z8530, first port
808 1 = /dev/scc1 First Z8530, second port
809 2 = /dev/scc2 Second Z8530, first port
810 3 = /dev/scc3 Second Z8530, second port
813 In a previous version these devices were named
814 /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
817 34 block Fourth IDE hard disk/CD-ROM interface
818 0 = /dev/hdg Master: whole disk (or CD-ROM)
819 64 = /dev/hdh Slave: whole disk (or CD-ROM)
821 Partitions are handled the same way as for the first
822 interface (see major number 3).
824 35 char tclmidi MIDI driver
825 0 = /dev/midi0 First MIDI port, kernel timed
826 1 = /dev/midi1 Second MIDI port, kernel timed
827 2 = /dev/midi2 Third MIDI port, kernel timed
828 3 = /dev/midi3 Fourth MIDI port, kernel timed
829 64 = /dev/rmidi0 First MIDI port, untimed
830 65 = /dev/rmidi1 Second MIDI port, untimed
831 66 = /dev/rmidi2 Third MIDI port, untimed
832 67 = /dev/rmidi3 Fourth MIDI port, untimed
833 128 = /dev/smpte0 First MIDI port, SMPTE timed
834 129 = /dev/smpte1 Second MIDI port, SMPTE timed
835 130 = /dev/smpte2 Third MIDI port, SMPTE timed
836 131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
838 35 block Slow memory ramdisk
839 0 = /dev/slram Slow memory ramdisk
841 36 char Netlink support
842 0 = /dev/route Routing, device updates, kernel to user
843 1 = /dev/skip enSKIP security cache control
844 3 = /dev/fwmonitor Firewall packet copies
845 16 = /dev/tap0 First Ethertap device
847 31 = /dev/tap15 16th Ethertap device
849 36 block OBSOLETE (was MCA ESDI hard disk)
852 0 = /dev/ht0 First IDE tape
853 1 = /dev/ht1 Second IDE tape
855 128 = /dev/nht0 First IDE tape, no rewind-on-close
856 129 = /dev/nht1 Second IDE tape, no rewind-on-close
859 Currently, only one IDE tape drive is supported.
861 37 block Zorro II ramdisk
862 0 = /dev/z2ram Zorro II ramdisk
864 38 char Myricom PCI Myrinet board
865 0 = /dev/mlanai0 First Myrinet board
866 1 = /dev/mlanai1 Second Myrinet board
869 This device is used for status query, board control
870 and "user level packet I/O." This board is also
871 accessible as a standard networking "eth" device.
873 38 block OBSOLETE (was Linux/AP+)
875 39 char ML-16P experimental I/O board
876 0 = /dev/ml16pa-a0 First card, first analog channel
877 1 = /dev/ml16pa-a1 First card, second analog channel
879 15 = /dev/ml16pa-a15 First card, 16th analog channel
880 16 = /dev/ml16pa-d First card, digital lines
881 17 = /dev/ml16pa-c0 First card, first counter/timer
882 18 = /dev/ml16pa-c1 First card, second counter/timer
883 19 = /dev/ml16pa-c2 First card, third counter/timer
884 32 = /dev/ml16pb-a0 Second card, first analog channel
885 33 = /dev/ml16pb-a1 Second card, second analog channel
887 47 = /dev/ml16pb-a15 Second card, 16th analog channel
888 48 = /dev/ml16pb-d Second card, digital lines
889 49 = /dev/ml16pb-c0 Second card, first counter/timer
890 50 = /dev/ml16pb-c1 Second card, second counter/timer
891 51 = /dev/ml16pb-c2 Second card, third counter/timer
899 41 char Yet Another Micro Monitor
900 0 = /dev/yamm Yet Another Micro Monitor
904 42 char Demo/sample use
906 42 block Demo/sample use
908 This number is intended for use in sample code, as
909 well as a general "example" device number. It
910 should never be used for a device driver that is being
911 distributed; either obtain an official number or use
912 the local/experimental range. The sudden addition or
913 removal of a driver with this number should not cause
914 ill effects to the system (bugs excepted.)
916 IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
917 DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
919 43 char isdn4linux virtual modem
920 0 = /dev/ttyI0 First virtual modem
922 63 = /dev/ttyI63 64th virtual modem
924 43 block Network block devices
925 0 = /dev/nb0 First network block device
926 1 = /dev/nb1 Second network block device
929 Network Block Device is somehow similar to loopback
930 devices: If you read from it, it sends packet across
931 network asking server for data. If you write to it, it
932 sends packet telling server to write. It could be used
933 to mounting filesystems over the net, swapping over
934 the net, implementing block device in userland etc.
936 44 char isdn4linux virtual modem - alternate devices
937 0 = /dev/cui0 Callout device for ttyI0
939 63 = /dev/cui63 Callout device for ttyI63
941 44 block Flash Translation Layer (FTL) filesystems
942 0 = /dev/ftla FTL on first Memory Technology Device
943 16 = /dev/ftlb FTL on second Memory Technology Device
944 32 = /dev/ftlc FTL on third Memory Technology Device
946 240 = /dev/ftlp FTL on 16th Memory Technology Device
948 Partitions are handled in the same way as for IDE
949 disks (see major number 3) except that the partition
950 limit is 15 rather than 63 per disk (same as SCSI.)
952 45 char isdn4linux ISDN BRI driver
953 0 = /dev/isdn0 First virtual B channel raw data
955 63 = /dev/isdn63 64th virtual B channel raw data
956 64 = /dev/isdnctrl0 First channel control/debug
958 127 = /dev/isdnctrl63 64th channel control/debug
960 128 = /dev/ippp0 First SyncPPP device
962 191 = /dev/ippp63 64th SyncPPP device
964 255 = /dev/isdninfo ISDN monitor interface
966 45 block Parallel port IDE disk devices
967 0 = /dev/pda First parallel port IDE disk
968 16 = /dev/pdb Second parallel port IDE disk
969 32 = /dev/pdc Third parallel port IDE disk
970 48 = /dev/pdd Fourth parallel port IDE disk
972 Partitions are handled in the same way as for IDE
973 disks (see major number 3) except that the partition
974 limit is 15 rather than 63 per disk.
976 46 char Comtrol Rocketport serial card
977 0 = /dev/ttyR0 First Rocketport port
978 1 = /dev/ttyR1 Second Rocketport port
980 46 block Parallel port ATAPI CD-ROM devices
981 0 = /dev/pcd0 First parallel port ATAPI CD-ROM
982 1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
983 2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
984 3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
986 47 char Comtrol Rocketport serial card - alternate devices
987 0 = /dev/cur0 Callout device for ttyR0
988 1 = /dev/cur1 Callout device for ttyR1
990 47 block Parallel port ATAPI disk devices
991 0 = /dev/pf0 First parallel port ATAPI disk
992 1 = /dev/pf1 Second parallel port ATAPI disk
993 2 = /dev/pf2 Third parallel port ATAPI disk
994 3 = /dev/pf3 Fourth parallel port ATAPI disk
996 This driver is intended for floppy disks and similar
997 devices and hence does not support partitioning.
999 48 char SDL RISCom serial card
1000 0 = /dev/ttyL0 First RISCom port
1001 1 = /dev/ttyL1 Second RISCom port
1003 48 block Mylex DAC960 PCI RAID controller; first controller
1004 0 = /dev/rd/c0d0 First disk, whole disk
1005 8 = /dev/rd/c0d1 Second disk, whole disk
1007 248 = /dev/rd/c0d31 32nd disk, whole disk
1010 0 = /dev/rd/c?d? Whole disk
1011 1 = /dev/rd/c?d?p1 First partition
1013 7 = /dev/rd/c?d?p7 Seventh partition
1015 49 char SDL RISCom serial card - alternate devices
1016 0 = /dev/cul0 Callout device for ttyL0
1017 1 = /dev/cul1 Callout device for ttyL1
1019 49 block Mylex DAC960 PCI RAID controller; second controller
1020 0 = /dev/rd/c1d0 First disk, whole disk
1021 8 = /dev/rd/c1d1 Second disk, whole disk
1023 248 = /dev/rd/c1d31 32nd disk, whole disk
1025 Partitions are handled as for major 48.
1027 50 char Reserved for GLINT
1029 50 block Mylex DAC960 PCI RAID controller; third controller
1030 0 = /dev/rd/c2d0 First disk, whole disk
1031 8 = /dev/rd/c2d1 Second disk, whole disk
1033 248 = /dev/rd/c2d31 32nd disk, whole disk
1035 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1036 0 = /dev/bc0 First Baycom radio modem
1037 1 = /dev/bc1 Second Baycom radio modem
1039 51 block Mylex DAC960 PCI RAID controller; fourth controller
1040 0 = /dev/rd/c3d0 First disk, whole disk
1041 8 = /dev/rd/c3d1 Second disk, whole disk
1043 248 = /dev/rd/c3d31 32nd disk, whole disk
1045 Partitions are handled as for major 48.
1047 52 char Spellcaster DataComm/BRI ISDN card
1048 0 = /dev/dcbri0 First DataComm card
1049 1 = /dev/dcbri1 Second DataComm card
1050 2 = /dev/dcbri2 Third DataComm card
1051 3 = /dev/dcbri3 Fourth DataComm card
1053 52 block Mylex DAC960 PCI RAID controller; fifth controller
1054 0 = /dev/rd/c4d0 First disk, whole disk
1055 8 = /dev/rd/c4d1 Second disk, whole disk
1057 248 = /dev/rd/c4d31 32nd disk, whole disk
1059 Partitions are handled as for major 48.
1061 53 char BDM interface for remote debugging MC683xx microcontrollers
1062 0 = /dev/pd_bdm0 PD BDM interface on lp0
1063 1 = /dev/pd_bdm1 PD BDM interface on lp1
1064 2 = /dev/pd_bdm2 PD BDM interface on lp2
1065 4 = /dev/icd_bdm0 ICD BDM interface on lp0
1066 5 = /dev/icd_bdm1 ICD BDM interface on lp1
1067 6 = /dev/icd_bdm2 ICD BDM interface on lp2
1069 This device is used for the interfacing to the MC683xx
1070 microcontrollers via Background Debug Mode by use of a
1071 Parallel Port interface. PD is the Motorola Public
1072 Domain Interface and ICD is the commercial interface
1075 53 block Mylex DAC960 PCI RAID controller; sixth controller
1076 0 = /dev/rd/c5d0 First disk, whole disk
1077 8 = /dev/rd/c5d1 Second disk, whole disk
1079 248 = /dev/rd/c5d31 32nd disk, whole disk
1081 Partitions are handled as for major 48.
1083 54 char Electrocardiognosis Holter serial card
1084 0 = /dev/holter0 First Holter port
1085 1 = /dev/holter1 Second Holter port
1086 2 = /dev/holter2 Third Holter port
1088 A custom serial card used by Electrocardiognosis SRL
1089 <mseritan@ottonel.pub.ro> to transfer data from Holter
1090 24-hour heart monitoring equipment.
1092 54 block Mylex DAC960 PCI RAID controller; seventh controller
1093 0 = /dev/rd/c6d0 First disk, whole disk
1094 8 = /dev/rd/c6d1 Second disk, whole disk
1096 248 = /dev/rd/c6d31 32nd disk, whole disk
1098 Partitions are handled as for major 48.
1100 55 char DSP56001 digital signal processor
1101 0 = /dev/dsp56k First DSP56001
1103 55 block Mylex DAC960 PCI RAID controller; eighth controller
1104 0 = /dev/rd/c7d0 First disk, whole disk
1105 8 = /dev/rd/c7d1 Second disk, whole disk
1107 248 = /dev/rd/c7d31 32nd disk, whole disk
1109 Partitions are handled as for major 48.
1111 56 char Apple Desktop Bus
1112 0 = /dev/adb ADB bus control
1114 Additional devices will be added to this number, all
1115 starting with /dev/adb.
1117 56 block Fifth IDE hard disk/CD-ROM interface
1118 0 = /dev/hdi Master: whole disk (or CD-ROM)
1119 64 = /dev/hdj Slave: whole disk (or CD-ROM)
1121 Partitions are handled the same way as for the first
1122 interface (see major number 3).
1124 57 char Hayes ESP serial card
1125 0 = /dev/ttyP0 First ESP port
1126 1 = /dev/ttyP1 Second ESP port
1129 57 block Sixth IDE hard disk/CD-ROM interface
1130 0 = /dev/hdk Master: whole disk (or CD-ROM)
1131 64 = /dev/hdl Slave: whole disk (or CD-ROM)
1133 Partitions are handled the same way as for the first
1134 interface (see major number 3).
1136 58 char Hayes ESP serial card - alternate devices
1137 0 = /dev/cup0 Callout device for ttyP0
1138 1 = /dev/cup1 Callout device for ttyP1
1141 58 block Reserved for logical volume manager
1143 59 char sf firewall package
1144 0 = /dev/firewall Communication with sf kernel module
1146 59 block Generic PDA filesystem device
1147 0 = /dev/pda0 First PDA device
1148 1 = /dev/pda1 Second PDA device
1151 The pda devices are used to mount filesystems on
1152 remote pda's (basically slow handheld machines with
1153 proprietary OS's and limited memory and storage
1154 running small fs translation drivers) through serial /
1155 IRDA / parallel links.
1157 NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1159 60-63 char LOCAL/EXPERIMENTAL USE
1161 60-63 block LOCAL/EXPERIMENTAL USE
1162 Allocated for local/experimental use. For devices not
1163 assigned official numbers, these ranges should be
1164 used in order to avoid conflicting with future assignments.
1166 64 char ENskip kernel encryption package
1167 0 = /dev/enskip Communication with ENskip kernel module
1169 64 block Scramdisk/DriveCrypt encrypted devices
1170 0 = /dev/scramdisk/master Master node for ioctls
1171 1 = /dev/scramdisk/1 First encrypted device
1172 2 = /dev/scramdisk/2 Second encrypted device
1174 255 = /dev/scramdisk/255 255th encrypted device
1176 The filename of the encrypted container and the passwords
1177 are sent via ioctls (using the sdmount tool) to the master
1178 node which then activates them via one of the
1179 /dev/scramdisk/x nodes for loop mounting (all handled
1180 through the sdmount tool).
1182 Requested by: andy@scramdisklinux.org
1184 65 char Sundance "plink" Transputer boards (obsolete, unused)
1185 0 = /dev/plink0 First plink device
1186 1 = /dev/plink1 Second plink device
1187 2 = /dev/plink2 Third plink device
1188 3 = /dev/plink3 Fourth plink device
1189 64 = /dev/rplink0 First plink device, raw
1190 65 = /dev/rplink1 Second plink device, raw
1191 66 = /dev/rplink2 Third plink device, raw
1192 67 = /dev/rplink3 Fourth plink device, raw
1193 128 = /dev/plink0d First plink device, debug
1194 129 = /dev/plink1d Second plink device, debug
1195 130 = /dev/plink2d Third plink device, debug
1196 131 = /dev/plink3d Fourth plink device, debug
1197 192 = /dev/rplink0d First plink device, raw, debug
1198 193 = /dev/rplink1d Second plink device, raw, debug
1199 194 = /dev/rplink2d Third plink device, raw, debug
1200 195 = /dev/rplink3d Fourth plink device, raw, debug
1202 This is a commercial driver; contact James Howes
1203 <jth@prosig.demon.co.uk> for information.
1205 65 block SCSI disk devices (16-31)
1206 0 = /dev/sdq 17th SCSI disk whole disk
1207 16 = /dev/sdr 18th SCSI disk whole disk
1208 32 = /dev/sds 19th SCSI disk whole disk
1210 240 = /dev/sdaf 32nd SCSI disk whole disk
1212 Partitions are handled in the same way as for IDE
1213 disks (see major number 3) except that the limit on
1216 66 char YARC PowerPC PCI coprocessor card
1217 0 = /dev/yppcpci0 First YARC card
1218 1 = /dev/yppcpci1 Second YARC card
1221 66 block SCSI disk devices (32-47)
1222 0 = /dev/sdag 33th SCSI disk whole disk
1223 16 = /dev/sdah 34th SCSI disk whole disk
1224 32 = /dev/sdai 35th SCSI disk whole disk
1226 240 = /dev/sdav 48nd SCSI disk whole disk
1228 Partitions are handled in the same way as for IDE
1229 disks (see major number 3) except that the limit on
1232 67 char Coda network file system
1233 0 = /dev/cfs0 Coda cache manager
1235 See http://www.coda.cs.cmu.edu for information about Coda.
1237 67 block SCSI disk devices (48-63)
1238 0 = /dev/sdaw 49th SCSI disk whole disk
1239 16 = /dev/sdax 50th SCSI disk whole disk
1240 32 = /dev/sday 51st SCSI disk whole disk
1242 240 = /dev/sdbl 64th SCSI disk whole disk
1244 Partitions are handled in the same way as for IDE
1245 disks (see major number 3) except that the limit on
1248 68 char CAPI 2.0 interface
1249 0 = /dev/capi20 Control device
1250 1 = /dev/capi20.00 First CAPI 2.0 application
1251 2 = /dev/capi20.01 Second CAPI 2.0 application
1253 20 = /dev/capi20.19 19th CAPI 2.0 application
1255 ISDN CAPI 2.0 driver for use with CAPI 2.0
1256 applications; currently supports the AVM B1 card.
1258 68 block SCSI disk devices (64-79)
1259 0 = /dev/sdbm 65th SCSI disk whole disk
1260 16 = /dev/sdbn 66th SCSI disk whole disk
1261 32 = /dev/sdbo 67th SCSI disk whole disk
1263 240 = /dev/sdcb 80th SCSI disk whole disk
1265 Partitions are handled in the same way as for IDE
1266 disks (see major number 3) except that the limit on
1269 69 char MA16 numeric accelerator card
1270 0 = /dev/ma16 Board memory access
1272 69 block SCSI disk devices (80-95)
1273 0 = /dev/sdcc 81st SCSI disk whole disk
1274 16 = /dev/sdcd 82nd SCSI disk whole disk
1275 32 = /dev/sdce 83th SCSI disk whole disk
1277 240 = /dev/sdcr 96th SCSI disk whole disk
1279 Partitions are handled in the same way as for IDE
1280 disks (see major number 3) except that the limit on
1283 70 char SpellCaster Protocol Services Interface
1284 0 = /dev/apscfg Configuration interface
1285 1 = /dev/apsauth Authentication interface
1286 2 = /dev/apslog Logging interface
1287 3 = /dev/apsdbg Debugging interface
1288 64 = /dev/apsisdn ISDN command interface
1289 65 = /dev/apsasync Async command interface
1290 128 = /dev/apsmon Monitor interface
1292 70 block SCSI disk devices (96-111)
1293 0 = /dev/sdcs 97th SCSI disk whole disk
1294 16 = /dev/sdct 98th SCSI disk whole disk
1295 32 = /dev/sdcu 99th SCSI disk whole disk
1297 240 = /dev/sddh 112nd SCSI disk whole disk
1299 Partitions are handled in the same way as for IDE
1300 disks (see major number 3) except that the limit on
1303 71 char Computone IntelliPort II serial card
1304 0 = /dev/ttyF0 IntelliPort II board 0, port 0
1305 1 = /dev/ttyF1 IntelliPort II board 0, port 1
1307 63 = /dev/ttyF63 IntelliPort II board 0, port 63
1308 64 = /dev/ttyF64 IntelliPort II board 1, port 0
1309 65 = /dev/ttyF65 IntelliPort II board 1, port 1
1311 127 = /dev/ttyF127 IntelliPort II board 1, port 63
1312 128 = /dev/ttyF128 IntelliPort II board 2, port 0
1313 129 = /dev/ttyF129 IntelliPort II board 2, port 1
1315 191 = /dev/ttyF191 IntelliPort II board 2, port 63
1316 192 = /dev/ttyF192 IntelliPort II board 3, port 0
1317 193 = /dev/ttyF193 IntelliPort II board 3, port 1
1319 255 = /dev/ttyF255 IntelliPort II board 3, port 63
1321 71 block SCSI disk devices (112-127)
1322 0 = /dev/sddi 113th SCSI disk whole disk
1323 16 = /dev/sddj 114th SCSI disk whole disk
1324 32 = /dev/sddk 115th SCSI disk whole disk
1326 240 = /dev/sddx 128th SCSI disk whole disk
1328 Partitions are handled in the same way as for IDE
1329 disks (see major number 3) except that the limit on
1332 72 char Computone IntelliPort II serial card - alternate devices
1333 0 = /dev/cuf0 Callout device for ttyF0
1334 1 = /dev/cuf1 Callout device for ttyF1
1336 63 = /dev/cuf63 Callout device for ttyF63
1337 64 = /dev/cuf64 Callout device for ttyF64
1338 65 = /dev/cuf65 Callout device for ttyF65
1340 127 = /dev/cuf127 Callout device for ttyF127
1341 128 = /dev/cuf128 Callout device for ttyF128
1342 129 = /dev/cuf129 Callout device for ttyF129
1344 191 = /dev/cuf191 Callout device for ttyF191
1345 192 = /dev/cuf192 Callout device for ttyF192
1346 193 = /dev/cuf193 Callout device for ttyF193
1348 255 = /dev/cuf255 Callout device for ttyF255
1350 72 block Compaq Intelligent Drive Array, first controller
1351 0 = /dev/ida/c0d0 First logical drive whole disk
1352 16 = /dev/ida/c0d1 Second logical drive whole disk
1354 240 = /dev/ida/c0d15 16th logical drive whole disk
1356 Partitions are handled the same way as for Mylex
1357 DAC960 (see major number 48) except that the limit on
1360 73 char Computone IntelliPort II serial card - control devices
1361 0 = /dev/ip2ipl0 Loadware device for board 0
1362 1 = /dev/ip2stat0 Status device for board 0
1363 4 = /dev/ip2ipl1 Loadware device for board 1
1364 5 = /dev/ip2stat1 Status device for board 1
1365 8 = /dev/ip2ipl2 Loadware device for board 2
1366 9 = /dev/ip2stat2 Status device for board 2
1367 12 = /dev/ip2ipl3 Loadware device for board 3
1368 13 = /dev/ip2stat3 Status device for board 3
1370 73 block Compaq Intelligent Drive Array, second controller
1371 0 = /dev/ida/c1d0 First logical drive whole disk
1372 16 = /dev/ida/c1d1 Second logical drive whole disk
1374 240 = /dev/ida/c1d15 16th logical drive whole disk
1376 Partitions are handled the same way as for Mylex
1377 DAC960 (see major number 48) except that the limit on
1381 0 = /dev/SCI/0 SCI device 0
1382 1 = /dev/SCI/1 SCI device 1
1385 Currently for Dolphin Interconnect Solutions' PCI-SCI
1388 74 block Compaq Intelligent Drive Array, third controller
1389 0 = /dev/ida/c2d0 First logical drive whole disk
1390 16 = /dev/ida/c2d1 Second logical drive whole disk
1392 240 = /dev/ida/c2d15 16th logical drive whole disk
1394 Partitions are handled the same way as for Mylex
1395 DAC960 (see major number 48) except that the limit on
1398 75 char Specialix IO8+ serial card
1399 0 = /dev/ttyW0 First IO8+ port, first card
1400 1 = /dev/ttyW1 Second IO8+ port, first card
1402 8 = /dev/ttyW8 First IO8+ port, second card
1405 75 block Compaq Intelligent Drive Array, fourth controller
1406 0 = /dev/ida/c3d0 First logical drive whole disk
1407 16 = /dev/ida/c3d1 Second logical drive whole disk
1409 240 = /dev/ida/c3d15 16th logical drive whole disk
1411 Partitions are handled the same way as for Mylex
1412 DAC960 (see major number 48) except that the limit on
1415 76 char Specialix IO8+ serial card - alternate devices
1416 0 = /dev/cuw0 Callout device for ttyW0
1417 1 = /dev/cuw1 Callout device for ttyW1
1419 8 = /dev/cuw8 Callout device for ttyW8
1422 76 block Compaq Intelligent Drive Array, fifth controller
1423 0 = /dev/ida/c4d0 First logical drive whole disk
1424 16 = /dev/ida/c4d1 Second logical drive whole disk
1426 240 = /dev/ida/c4d15 16th logical drive whole disk
1428 Partitions are handled the same way as for Mylex
1429 DAC960 (see major number 48) except that the limit on
1433 77 char ComScire Quantum Noise Generator
1434 0 = /dev/qng ComScire Quantum Noise Generator
1436 77 block Compaq Intelligent Drive Array, sixth controller
1437 0 = /dev/ida/c5d0 First logical drive whole disk
1438 16 = /dev/ida/c5d1 Second logical drive whole disk
1440 240 = /dev/ida/c5d15 16th logical drive whole disk
1442 Partitions are handled the same way as for Mylex
1443 DAC960 (see major number 48) except that the limit on
1446 78 char PAM Software's multimodem boards
1447 0 = /dev/ttyM0 First PAM modem
1448 1 = /dev/ttyM1 Second PAM modem
1451 78 block Compaq Intelligent Drive Array, seventh controller
1452 0 = /dev/ida/c6d0 First logical drive whole disk
1453 16 = /dev/ida/c6d1 Second logical drive whole disk
1455 240 = /dev/ida/c6d15 16th logical drive whole disk
1457 Partitions are handled the same way as for Mylex
1458 DAC960 (see major number 48) except that the limit on
1461 79 char PAM Software's multimodem boards - alternate devices
1462 0 = /dev/cum0 Callout device for ttyM0
1463 1 = /dev/cum1 Callout device for ttyM1
1466 79 block Compaq Intelligent Drive Array, eighth controller
1467 0 = /dev/ida/c7d0 First logical drive whole disk
1468 16 = /dev/ida/c7d1 Second logical drive whole disk
1470 240 = /dev/ida/c715 16th logical drive whole disk
1472 Partitions are handled the same way as for Mylex
1473 DAC960 (see major number 48) except that the limit on
1476 80 char Photometrics AT200 CCD camera
1477 0 = /dev/at200 Photometrics AT200 CCD camera
1479 80 block I2O hard disk
1480 0 = /dev/i2o/hda First I2O hard disk, whole disk
1481 16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1483 240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1485 Partitions are handled in the same way as for IDE
1486 disks (see major number 3) except that the limit on
1490 0 = /dev/video0 Video capture/overlay device
1492 63 = /dev/video63 Video capture/overlay device
1493 64 = /dev/radio0 Radio device
1495 127 = /dev/radio63 Radio device
1496 224 = /dev/vbi0 Vertical blank interrupt
1498 255 = /dev/vbi31 Vertical blank interrupt
1500 81 block I2O hard disk
1501 0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1502 16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1504 240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1506 Partitions are handled in the same way as for IDE
1507 disks (see major number 3) except that the limit on
1510 82 char WiNRADiO communications receiver card
1511 0 = /dev/winradio0 First WiNRADiO card
1512 1 = /dev/winradio1 Second WiNRADiO card
1515 The driver and documentation may be obtained from
1516 http://www.winradio.com/
1518 82 block I2O hard disk
1519 0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1520 16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1522 240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1524 Partitions are handled in the same way as for IDE
1525 disks (see major number 3) except that the limit on
1528 83 char Matrox mga_vid video driver
1529 0 = /dev/mga_vid0 1st video card
1530 1 = /dev/mga_vid1 2nd video card
1531 2 = /dev/mga_vid2 3rd video card
1533 15 = /dev/mga_vid15 16th video card
1535 83 block I2O hard disk
1536 0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1537 16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1539 240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1541 Partitions are handled in the same way as for IDE
1542 disks (see major number 3) except that the limit on
1545 84 char Ikon 1011[57] Versatec Greensheet Interface
1546 0 = /dev/ihcp0 First Greensheet port
1547 1 = /dev/ihcp1 Second Greensheet port
1549 84 block I2O hard disk
1550 0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1551 16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1553 240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1555 Partitions are handled in the same way as for IDE
1556 disks (see major number 3) except that the limit on
1559 85 char Linux/SGI shared memory input queue
1560 0 = /dev/shmiq Master shared input queue
1561 1 = /dev/qcntl0 First device pushed
1562 2 = /dev/qcntl1 Second device pushed
1565 85 block I2O hard disk
1566 0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1567 16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1569 240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1571 Partitions are handled in the same way as for IDE
1572 disks (see major number 3) except that the limit on
1575 86 char SCSI media changer
1576 0 = /dev/sch0 First SCSI media changer
1577 1 = /dev/sch1 Second SCSI media changer
1580 86 block I2O hard disk
1581 0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1582 16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1584 240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1586 Partitions are handled in the same way as for IDE
1587 disks (see major number 3) except that the limit on
1590 87 char Sony Control-A1 stereo control bus
1591 0 = /dev/controla0 First device on chain
1592 1 = /dev/controla1 Second device on chain
1595 87 block I2O hard disk
1596 0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1597 16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1599 240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1601 Partitions are handled in the same way as for IDE
1602 disks (see major number 3) except that the limit on
1605 88 char COMX synchronous serial card
1606 0 = /dev/comx0 COMX channel 0
1607 1 = /dev/comx1 COMX channel 1
1610 88 block Seventh IDE hard disk/CD-ROM interface
1611 0 = /dev/hdm Master: whole disk (or CD-ROM)
1612 64 = /dev/hdn Slave: whole disk (or CD-ROM)
1614 Partitions are handled the same way as for the first
1615 interface (see major number 3).
1617 89 char I2C bus interface
1618 0 = /dev/i2c-0 First I2C adapter
1619 1 = /dev/i2c-1 Second I2C adapter
1622 89 block Eighth IDE hard disk/CD-ROM interface
1623 0 = /dev/hdo Master: whole disk (or CD-ROM)
1624 64 = /dev/hdp Slave: whole disk (or CD-ROM)
1626 Partitions are handled the same way as for the first
1627 interface (see major number 3).
1629 90 char Memory Technology Device (RAM, ROM, Flash)
1630 0 = /dev/mtd0 First MTD (rw)
1631 1 = /dev/mtdr0 First MTD (ro)
1633 30 = /dev/mtd15 16th MTD (rw)
1634 31 = /dev/mtdr15 16th MTD (ro)
1636 90 block Ninth IDE hard disk/CD-ROM interface
1637 0 = /dev/hdq Master: whole disk (or CD-ROM)
1638 64 = /dev/hdr Slave: whole disk (or CD-ROM)
1640 Partitions are handled the same way as for the first
1641 interface (see major number 3).
1643 91 char CAN-Bus devices
1644 0 = /dev/can0 First CAN-Bus controller
1645 1 = /dev/can1 Second CAN-Bus controller
1648 91 block Tenth IDE hard disk/CD-ROM interface
1649 0 = /dev/hds Master: whole disk (or CD-ROM)
1650 64 = /dev/hdt Slave: whole disk (or CD-ROM)
1652 Partitions are handled the same way as for the first
1653 interface (see major number 3).
1655 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1657 92 block PPDD encrypted disk driver
1658 0 = /dev/ppdd0 First encrypted disk
1659 1 = /dev/ppdd1 Second encrypted disk
1662 Partitions are handled in the same way as for IDE
1663 disks (see major number 3) except that the limit on
1668 93 block NAND Flash Translation Layer filesystem
1669 0 = /dev/nftla First NFTL layer
1670 16 = /dev/nftlb Second NFTL layer
1672 240 = /dev/nftlp 16th NTFL layer
1676 94 block IBM S/390 DASD block storage
1677 0 = /dev/dasda First DASD device, major
1678 1 = /dev/dasda1 First DASD device, block 1
1679 2 = /dev/dasda2 First DASD device, block 2
1680 3 = /dev/dasda3 First DASD device, block 3
1681 4 = /dev/dasdb Second DASD device, major
1682 5 = /dev/dasdb1 Second DASD device, block 1
1683 6 = /dev/dasdb2 Second DASD device, block 2
1684 7 = /dev/dasdb3 Second DASD device, block 3
1688 0 = /dev/ipl Filter control device/log file
1689 1 = /dev/ipnat NAT control device/log file
1690 2 = /dev/ipstate State information log file
1691 3 = /dev/ipauth Authentication control device/log file
1694 96 char Parallel port ATAPI tape devices
1695 0 = /dev/pt0 First parallel port ATAPI tape
1696 1 = /dev/pt1 Second parallel port ATAPI tape
1698 128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1699 129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1702 96 block Inverse NAND Flash Translation Layer
1703 0 = /dev/inftla First INFTL layer
1704 16 = /dev/inftlb Second INFTL layer
1706 240 = /dev/inftlp 16th INTFL layer
1708 97 char Parallel port generic ATAPI interface
1709 0 = /dev/pg0 First parallel port ATAPI device
1710 1 = /dev/pg1 Second parallel port ATAPI device
1711 2 = /dev/pg2 Third parallel port ATAPI device
1712 3 = /dev/pg3 Fourth parallel port ATAPI device
1714 These devices support the same API as the generic SCSI
1717 98 char Control and Measurement Device (comedi)
1718 0 = /dev/comedi0 First comedi device
1719 1 = /dev/comedi1 Second comedi device
1722 See http://stm.lbl.gov/comedi.
1724 98 block User-mode virtual block device
1725 0 = /dev/ubda First user-mode block device
1726 16 = /dev/udbb Second user-mode block device
1729 Partitions are handled in the same way as for IDE
1730 disks (see major number 3) except that the limit on
1733 This device is used by the user-mode virtual kernel port.
1735 99 char Raw parallel ports
1736 0 = /dev/parport0 First parallel port
1737 1 = /dev/parport1 Second parallel port
1740 99 block JavaStation flash disk
1741 0 = /dev/jsfd JavaStation flash disk
1743 100 char Telephony for Linux
1744 0 = /dev/phone0 First telephony device
1745 1 = /dev/phone1 Second telephony device
1748 101 char Motorola DSP 56xxx board
1749 0 = /dev/mdspstat Status information
1750 1 = /dev/mdsp1 First DSP board I/O controls
1752 16 = /dev/mdsp16 16th DSP board I/O controls
1754 101 block AMI HyperDisk RAID controller
1755 0 = /dev/amiraid/ar0 First array whole disk
1756 16 = /dev/amiraid/ar1 Second array whole disk
1758 240 = /dev/amiraid/ar15 16th array whole disk
1760 For each device, partitions are added as:
1761 0 = /dev/amiraid/ar? Whole disk
1762 1 = /dev/amiraid/ar?p1 First partition
1763 2 = /dev/amiraid/ar?p2 Second partition
1765 15 = /dev/amiraid/ar?p15 15th partition
1769 102 block Compressed block device
1770 0 = /dev/cbd/a First compressed block device, whole device
1771 16 = /dev/cbd/b Second compressed block device, whole device
1773 240 = /dev/cbd/p 16th compressed block device, whole device
1775 Partitions are handled in the same way as for IDE
1776 disks (see major number 3) except that the limit on
1779 103 char Arla network file system
1780 0 = /dev/nnpfs0 First NNPFS device
1781 1 = /dev/nnpfs1 Second NNPFS device
1783 Arla is a free clone of the Andrew File System, AFS.
1784 The NNPFS device gives user mode filesystem
1785 implementations a kernel presence for caching and easy
1786 mounting. For more information about the project,
1787 write to <arla-drinkers@stacken.kth.se> or see
1788 http://www.stacken.kth.se/project/arla/
1790 103 block Audit device
1791 0 = /dev/audit Audit device
1793 104 char Flash BIOS support
1795 104 block Compaq Next Generation Drive Array, first controller
1796 0 = /dev/cciss/c0d0 First logical drive, whole disk
1797 16 = /dev/cciss/c0d1 Second logical drive, whole disk
1799 240 = /dev/cciss/c0d15 16th logical drive, whole disk
1801 Partitions are handled the same way as for Mylex
1802 DAC960 (see major number 48) except that the limit on
1805 105 char Comtrol VS-1000 serial controller
1806 0 = /dev/ttyV0 First VS-1000 port
1807 1 = /dev/ttyV1 Second VS-1000 port
1810 105 block Compaq Next Generation Drive Array, second controller
1811 0 = /dev/cciss/c1d0 First logical drive, whole disk
1812 16 = /dev/cciss/c1d1 Second logical drive, whole disk
1814 240 = /dev/cciss/c1d15 16th logical drive, whole disk
1816 Partitions are handled the same way as for Mylex
1817 DAC960 (see major number 48) except that the limit on
1820 106 char Comtrol VS-1000 serial controller - alternate devices
1821 0 = /dev/cuv0 First VS-1000 port
1822 1 = /dev/cuv1 Second VS-1000 port
1825 106 block Compaq Next Generation Drive Array, third controller
1826 0 = /dev/cciss/c2d0 First logical drive, whole disk
1827 16 = /dev/cciss/c2d1 Second logical drive, whole disk
1829 240 = /dev/cciss/c2d15 16th logical drive, whole disk
1831 Partitions are handled the same way as for Mylex
1832 DAC960 (see major number 48) except that the limit on
1835 107 char 3Dfx Voodoo Graphics device
1836 0 = /dev/3dfx Primary 3Dfx graphics device
1838 107 block Compaq Next Generation Drive Array, fourth controller
1839 0 = /dev/cciss/c3d0 First logical drive, whole disk
1840 16 = /dev/cciss/c3d1 Second logical drive, whole disk
1842 240 = /dev/cciss/c3d15 16th logical drive, whole disk
1844 Partitions are handled the same way as for Mylex
1845 DAC960 (see major number 48) except that the limit on
1848 108 char Device independent PPP interface
1849 0 = /dev/ppp Device independent PPP interface
1851 108 block Compaq Next Generation Drive Array, fifth controller
1852 0 = /dev/cciss/c4d0 First logical drive, whole disk
1853 16 = /dev/cciss/c4d1 Second logical drive, whole disk
1855 240 = /dev/cciss/c4d15 16th logical drive, whole disk
1857 Partitions are handled the same way as for Mylex
1858 DAC960 (see major number 48) except that the limit on
1861 109 char Reserved for logical volume manager
1863 109 block Compaq Next Generation Drive Array, sixth controller
1864 0 = /dev/cciss/c5d0 First logical drive, whole disk
1865 16 = /dev/cciss/c5d1 Second logical drive, whole disk
1867 240 = /dev/cciss/c5d15 16th logical drive, whole disk
1869 Partitions are handled the same way as for Mylex
1870 DAC960 (see major number 48) except that the limit on
1873 110 char miroMEDIA Surround board
1874 0 = /dev/srnd0 First miroMEDIA Surround board
1875 1 = /dev/srnd1 Second miroMEDIA Surround board
1878 110 block Compaq Next Generation Drive Array, seventh controller
1879 0 = /dev/cciss/c6d0 First logical drive, whole disk
1880 16 = /dev/cciss/c6d1 Second logical drive, whole disk
1882 240 = /dev/cciss/c6d15 16th logical drive, whole disk
1884 Partitions are handled the same way as for Mylex
1885 DAC960 (see major number 48) except that the limit on
1890 111 block Compaq Next Generation Drive Array, eighth controller
1891 0 = /dev/cciss/c7d0 First logical drive, whole disk
1892 16 = /dev/cciss/c7d1 Second logical drive, whole disk
1894 240 = /dev/cciss/c7d15 16th logical drive, whole disk
1896 Partitions are handled the same way as for Mylex
1897 DAC960 (see major number 48) except that the limit on
1900 112 char ISI serial card
1901 0 = /dev/ttyM0 First ISI port
1902 1 = /dev/ttyM1 Second ISI port
1905 There is currently a device-naming conflict between
1906 these and PAM multimodems (major 78).
1908 112 block IBM iSeries virtual disk
1909 0 = /dev/iseries/vda First virtual disk, whole disk
1910 8 = /dev/iseries/vdb Second virtual disk, whole disk
1912 200 = /dev/iseries/vdz 26th virtual disk, whole disk
1913 208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1915 248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1917 Partitions are handled in the same way as for IDE
1918 disks (see major number 3) except that the limit on
1921 113 char ISI serial card - alternate devices
1922 0 = /dev/cum0 Callout device for ttyM0
1923 1 = /dev/cum1 Callout device for ttyM1
1926 113 block IBM iSeries virtual CD-ROM
1927 0 = /dev/iseries/vcda First virtual CD-ROM
1928 1 = /dev/iseries/vcdb Second virtual CD-ROM
1931 114 char Picture Elements ISE board
1932 0 = /dev/ise0 First ISE board
1933 1 = /dev/ise1 Second ISE board
1935 128 = /dev/isex0 Control node for first ISE board
1936 129 = /dev/isex1 Control node for second ISE board
1939 The ISE board is an embedded computer, optimized for
1940 image processing. The /dev/iseN nodes are the general
1941 I/O access to the board, the /dev/isex0 nodes command
1942 nodes used to control the board.
1944 114 block IDE BIOS powered software RAID interfaces such as the
1948 1 = /dev/ataraid/d0p1
1949 2 = /dev/ataraid/d0p2
1951 16 = /dev/ataraid/d1
1952 17 = /dev/ataraid/d1p1
1953 18 = /dev/ataraid/d1p2
1955 255 = /dev/ataraid/d15p15
1957 Partitions are handled in the same way as for IDE
1958 disks (see major number 3) except that the limit on
1961 115 char TI link cable devices (115 was formerly the console driver speaker)
1962 0 = /dev/tipar0 Parallel cable on first parallel port
1964 7 = /dev/tipar7 Parallel cable on seventh parallel port
1966 8 = /dev/tiser0 Serial cable on first serial port
1968 15 = /dev/tiser7 Serial cable on seventh serial port
1970 16 = /dev/tiusb0 First USB cable
1972 47 = /dev/tiusb31 32nd USB cable
1974 115 block NetWare (NWFS) Devices (0-255)
1976 The NWFS (NetWare) devices are used to present a
1977 collection of NetWare Mirror Groups or NetWare
1978 Partitions as a logical storage segment for
1979 use in mounting NetWare volumes. A maximum of
1980 256 NetWare volumes can be supported in a single
1983 http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
1985 0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
1986 1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
1987 2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
1989 255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
1991 116 char Advanced Linux Sound Driver (ALSA)
1993 116 block MicroMemory battery backed RAM adapter (NVRAM)
1994 Supports 16 boards, 15 partitions each.
1995 Requested by neilb at cse.unsw.edu.au.
1997 0 = /dev/umem/d0 Whole of first board
1998 1 = /dev/umem/d0p1 First partition of first board
1999 2 = /dev/umem/d0p2 Second partition of first board
2000 15 = /dev/umem/d0p15 15th partition of first board
2002 16 = /dev/umem/d1 Whole of second board
2003 17 = /dev/umem/d1p1 First partition of second board
2005 255= /dev/umem/d15p15 15th partition of 16th board.
2007 117 char COSA/SRP synchronous serial card
2008 0 = /dev/cosa0c0 1st board, 1st channel
2009 1 = /dev/cosa0c1 1st board, 2nd channel
2011 16 = /dev/cosa1c0 2nd board, 1st channel
2012 17 = /dev/cosa1c1 2nd board, 2nd channel
2015 117 block Enterprise Volume Management System (EVMS)
2017 The EVMS driver uses a layered, plug-in model to provide
2018 unparalleled flexibility and extensibility in managing
2019 storage. This allows for easy expansion or customization
2020 of various levels of volume management. Requested by
2021 Mark Peloquin (peloquin at us.ibm.com).
2023 Note: EVMS populates and manages all the devnodes in
2026 http://sf.net/projects/evms
2028 0 = /dev/evms/block_device EVMS block device
2029 1 = /dev/evms/legacyname1 First EVMS legacy device
2030 2 = /dev/evms/legacyname2 Second EVMS legacy device
2032 Both ranges can grow (down or up) until they meet.
2034 254 = /dev/evms/EVMSname2 Second EVMS native device
2035 255 = /dev/evms/EVMSname1 First EVMS native device
2037 Note: legacyname(s) are derived from the normal legacy
2038 device names. For example, /dev/hda5 would become
2041 118 char IBM Cryptographic Accelerator
2042 0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2043 1 = /dev/ica0 IBMCA Device 0
2044 2 = /dev/ica1 IBMCA Device 1
2047 119 char VMware virtual network control
2048 0 = /dev/vnet0 1st virtual network
2049 1 = /dev/vnet1 2nd virtual network
2052 120-127 char LOCAL/EXPERIMENTAL USE
2054 120-127 block LOCAL/EXPERIMENTAL USE
2055 Allocated for local/experimental use. For devices not
2056 assigned official numbers, these ranges should be
2057 used in order to avoid conflicting with future assignments.
2059 128-135 char Unix98 PTY masters
2061 These devices should not have corresponding device
2062 nodes; instead they should be accessed through the
2063 /dev/ptmx cloning interface.
2065 128 block SCSI disk devices (128-143)
2066 0 = /dev/sddy 129th SCSI disk whole disk
2067 16 = /dev/sddz 130th SCSI disk whole disk
2068 32 = /dev/sdea 131th SCSI disk whole disk
2070 240 = /dev/sden 144th SCSI disk whole disk
2072 Partitions are handled in the same way as for IDE
2073 disks (see major number 3) except that the limit on
2076 129 block SCSI disk devices (144-159)
2077 0 = /dev/sdeo 145th SCSI disk whole disk
2078 16 = /dev/sdep 146th SCSI disk whole disk
2079 32 = /dev/sdeq 147th SCSI disk whole disk
2081 240 = /dev/sdfd 160th SCSI disk whole disk
2083 Partitions are handled in the same way as for IDE
2084 disks (see major number 3) except that the limit on
2087 130 char (Misc devices)
2089 130 block SCSI disk devices (160-175)
2090 0 = /dev/sdfe 161st SCSI disk whole disk
2091 16 = /dev/sdff 162nd SCSI disk whole disk
2092 32 = /dev/sdfg 163rd SCSI disk whole disk
2094 240 = /dev/sdft 176th SCSI disk whole disk
2096 Partitions are handled in the same way as for IDE
2097 disks (see major number 3) except that the limit on
2100 131 block SCSI disk devices (176-191)
2101 0 = /dev/sdfu 177th SCSI disk whole disk
2102 16 = /dev/sdfv 178th SCSI disk whole disk
2103 32 = /dev/sdfw 179th SCSI disk whole disk
2105 240 = /dev/sdgj 192nd SCSI disk whole disk
2107 Partitions are handled in the same way as for IDE
2108 disks (see major number 3) except that the limit on
2111 132 block SCSI disk devices (192-207)
2112 0 = /dev/sdgk 193rd SCSI disk whole disk
2113 16 = /dev/sdgl 194th SCSI disk whole disk
2114 32 = /dev/sdgm 195th SCSI disk whole disk
2116 240 = /dev/sdgz 208th SCSI disk whole disk
2118 Partitions are handled in the same way as for IDE
2119 disks (see major number 3) except that the limit on
2122 133 block SCSI disk devices (208-223)
2123 0 = /dev/sdha 209th SCSI disk whole disk
2124 16 = /dev/sdhb 210th SCSI disk whole disk
2125 32 = /dev/sdhc 211th SCSI disk whole disk
2127 240 = /dev/sdhp 224th SCSI disk whole disk
2129 Partitions are handled in the same way as for IDE
2130 disks (see major number 3) except that the limit on
2133 134 block SCSI disk devices (224-239)
2134 0 = /dev/sdhq 225th SCSI disk whole disk
2135 16 = /dev/sdhr 226th SCSI disk whole disk
2136 32 = /dev/sdhs 227th SCSI disk whole disk
2138 240 = /dev/sdif 240th SCSI disk whole disk
2140 Partitions are handled in the same way as for IDE
2141 disks (see major number 3) except that the limit on
2144 135 block SCSI disk devices (240-255)
2145 0 = /dev/sdig 241st SCSI disk whole disk
2146 16 = /dev/sdih 242nd SCSI disk whole disk
2147 32 = /dev/sdih 243rd SCSI disk whole disk
2149 240 = /dev/sdiv 256th SCSI disk whole disk
2151 Partitions are handled in the same way as for IDE
2152 disks (see major number 3) except that the limit on
2155 136-143 char Unix98 PTY slaves
2156 0 = /dev/pts/0 First Unix98 pseudo-TTY
2157 1 = /dev/pts/1 Second Unix98 pseudo-TTY
2160 These device nodes are automatically generated with
2161 the proper permissions and modes by mounting the
2162 devpts filesystem onto /dev/pts with the appropriate
2163 mount options (distribution dependent, however, on
2164 *most* distributions the appropriate options are
2165 "mode=0620,gid=<gid of the "tty" group>".)
2167 136 block Mylex DAC960 PCI RAID controller; ninth controller
2168 0 = /dev/rd/c8d0 First disk, whole disk
2169 8 = /dev/rd/c8d1 Second disk, whole disk
2171 248 = /dev/rd/c8d31 32nd disk, whole disk
2173 Partitions are handled as for major 48.
2175 137 block Mylex DAC960 PCI RAID controller; tenth controller
2176 0 = /dev/rd/c9d0 First disk, whole disk
2177 8 = /dev/rd/c9d1 Second disk, whole disk
2179 248 = /dev/rd/c9d31 32nd disk, whole disk
2181 Partitions are handled as for major 48.
2183 138 block Mylex DAC960 PCI RAID controller; eleventh controller
2184 0 = /dev/rd/c10d0 First disk, whole disk
2185 8 = /dev/rd/c10d1 Second disk, whole disk
2187 248 = /dev/rd/c10d31 32nd disk, whole disk
2189 Partitions are handled as for major 48.
2191 139 block Mylex DAC960 PCI RAID controller; twelfth controller
2192 0 = /dev/rd/c11d0 First disk, whole disk
2193 8 = /dev/rd/c11d1 Second disk, whole disk
2195 248 = /dev/rd/c11d31 32nd disk, whole disk
2197 Partitions are handled as for major 48.
2199 140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2200 0 = /dev/rd/c12d0 First disk, whole disk
2201 8 = /dev/rd/c12d1 Second disk, whole disk
2203 248 = /dev/rd/c12d31 32nd disk, whole disk
2205 Partitions are handled as for major 48.
2207 141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2208 0 = /dev/rd/c13d0 First disk, whole disk
2209 8 = /dev/rd/c13d1 Second disk, whole disk
2211 248 = /dev/rd/c13d31 32nd disk, whole disk
2213 Partitions are handled as for major 48.
2215 142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2216 0 = /dev/rd/c14d0 First disk, whole disk
2217 8 = /dev/rd/c14d1 Second disk, whole disk
2219 248 = /dev/rd/c14d31 32nd disk, whole disk
2221 Partitions are handled as for major 48.
2223 143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2224 0 = /dev/rd/c15d0 First disk, whole disk
2225 8 = /dev/rd/c15d1 Second disk, whole disk
2227 248 = /dev/rd/c15d31 32nd disk, whole disk
2229 Partitions are handled as for major 48.
2231 144 char Encapsulated PPP
2232 0 = /dev/pppox0 First PPP over Ethernet
2234 63 = /dev/pppox63 64th PPP over Ethernet
2236 This is primarily used for ADSL.
2238 The SST 5136-DN DeviceNet interface driver has been
2239 relocated to major 183 due to an unfortunate conflict.
2241 144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2242 0 = mounted device 256
2243 255 = mounted device 511
2245 145 char SAM9407-based soundcard
2247 1 = /dev/sam0_sequencer
2248 2 = /dev/sam0_midi00
2251 6 = /dev/sam0_sndstat
2252 18 = /dev/sam0_midi01
2253 34 = /dev/sam0_midi02
2254 50 = /dev/sam0_midi03
2255 64 = /dev/sam1_mixer
2257 128 = /dev/sam2_mixer
2259 192 = /dev/sam3_mixer
2262 Device functions match OSS, but offer a number of
2263 addons, which are sam9407 specific. OSS can be
2264 operated simultaneously, taking care of the codec.
2266 145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2267 0 = mounted device 512
2268 255 = mounted device 767
2270 146 char SYSTRAM SCRAMNet mirrored-memory network
2271 0 = /dev/scramnet0 First SCRAMNet device
2272 1 = /dev/scramnet1 Second SCRAMNet device
2275 146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2276 0 = mounted device 768
2277 255 = mounted device 1023
2279 147 char Aureal Semiconductor Vortex Audio device
2280 0 = /dev/aureal0 First Aureal Vortex
2281 1 = /dev/aureal1 Second Aureal Vortex
2284 147 block Distributed Replicated Block Device (DRBD)
2285 0 = /dev/drbd0 First DRBD device
2286 1 = /dev/drbd1 Second DRBD device
2289 148 char Technology Concepts serial card
2290 0 = /dev/ttyT0 First TCL port
2291 1 = /dev/ttyT1 Second TCL port
2294 149 char Technology Concepts serial card - alternate devices
2295 0 = /dev/cut0 Callout device for ttyT0
2296 1 = /dev/cut0 Callout device for ttyT1
2299 150 char Real-Time Linux FIFOs
2300 0 = /dev/rtf0 First RTLinux FIFO
2301 1 = /dev/rtf1 Second RTLinux FIFO
2304 151 char DPT I2O SmartRaid V controller
2305 0 = /dev/dpti0 First DPT I2O adapter
2306 1 = /dev/dpti1 Second DPT I2O adapter
2309 152 char EtherDrive Control Device
2310 0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2311 1 = /dev/etherd/err Monitor errors
2312 2 = /dev/etherd/raw Raw AoE packet monitor
2314 152 block EtherDrive Block Devices
2315 0 = /dev/etherd/0 EtherDrive 0
2317 255 = /dev/etherd/255 EtherDrive 255
2319 153 char SPI Bus Interface (sometimes referred to as MicroWire)
2320 0 = /dev/spi0 First SPI device on the bus
2321 1 = /dev/spi1 Second SPI device on the bus
2323 15 = /dev/spi15 Sixteenth SPI device on the bus
2325 153 block Enhanced Metadisk RAID (EMD) storage units
2326 0 = /dev/emd/0 First unit
2327 1 = /dev/emd/0p1 Partition 1 on First unit
2328 2 = /dev/emd/0p2 Partition 2 on First unit
2330 15 = /dev/emd/0p15 Partition 15 on First unit
2332 16 = /dev/emd/1 Second unit
2333 32 = /dev/emd/2 Third unit
2335 240 = /dev/emd/15 Sixteenth unit
2337 Partitions are handled in the same way as for IDE
2338 disks (see major number 3) except that the limit on
2341 154 char Specialix RIO serial card
2342 0 = /dev/ttySR0 First RIO port
2344 255 = /dev/ttySR255 256th RIO port
2346 155 char Specialix RIO serial card - alternate devices
2347 0 = /dev/cusr0 Callout device for ttySR0
2349 255 = /dev/cusr255 Callout device for ttySR255
2351 156 char Specialix RIO serial card
2352 0 = /dev/ttySR256 257th RIO port
2354 255 = /dev/ttySR511 512th RIO port
2356 157 char Specialix RIO serial card - alternate devices
2357 0 = /dev/cusr256 Callout device for ttySR256
2359 255 = /dev/cusr511 Callout device for ttySR511
2361 158 char Dialogic GammaLink fax driver
2362 0 = /dev/gfax0 GammaLink channel 0
2363 1 = /dev/gfax1 GammaLink channel 1
2370 160 char General Purpose Instrument Bus (GPIB)
2371 0 = /dev/gpib0 First GPIB bus
2372 1 = /dev/gpib1 Second GPIB bus
2375 160 block Carmel 8-port SATA Disks on First Controller
2376 0 = /dev/carmel/0 SATA disk 0 whole disk
2377 1 = /dev/carmel/0p1 SATA disk 0 partition 1
2379 31 = /dev/carmel/0p31 SATA disk 0 partition 31
2381 32 = /dev/carmel/1 SATA disk 1 whole disk
2382 64 = /dev/carmel/2 SATA disk 2 whole disk
2384 224 = /dev/carmel/7 SATA disk 7 whole disk
2386 Partitions are handled in the same way as for IDE
2387 disks (see major number 3) except that the limit on
2390 161 char IrCOMM devices (IrDA serial/parallel emulation)
2391 0 = /dev/ircomm0 First IrCOMM device
2392 1 = /dev/ircomm1 Second IrCOMM device
2394 16 = /dev/irlpt0 First IrLPT device
2395 17 = /dev/irlpt1 Second IrLPT device
2398 161 block Carmel 8-port SATA Disks on Second Controller
2399 0 = /dev/carmel/8 SATA disk 8 whole disk
2400 1 = /dev/carmel/8p1 SATA disk 8 partition 1
2402 31 = /dev/carmel/8p31 SATA disk 8 partition 31
2404 32 = /dev/carmel/9 SATA disk 9 whole disk
2405 64 = /dev/carmel/10 SATA disk 10 whole disk
2407 224 = /dev/carmel/15 SATA disk 15 whole disk
2409 Partitions are handled in the same way as for IDE
2410 disks (see major number 3) except that the limit on
2413 162 char Raw block device interface
2414 0 = /dev/rawctl Raw I/O control device
2415 1 = /dev/raw/raw1 First raw I/O device
2416 2 = /dev/raw/raw2 Second raw I/O device
2418 max minor number of raw device is set by kernel config
2419 MAX_RAW_DEVS or raw module parameter 'max_raw_devs'
2423 164 char Chase Research AT/PCI-Fast serial card
2424 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
2426 15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
2427 16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
2429 31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
2430 32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
2432 47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
2433 48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
2435 63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
2437 165 char Chase Research AT/PCI-Fast serial card - alternate devices
2438 0 = /dev/cuch0 Callout device for ttyCH0
2440 63 = /dev/cuch63 Callout device for ttyCH63
2442 166 char ACM USB modems
2443 0 = /dev/ttyACM0 First ACM modem
2444 1 = /dev/ttyACM1 Second ACM modem
2447 167 char ACM USB modems - alternate devices
2448 0 = /dev/cuacm0 Callout device for ttyACM0
2449 1 = /dev/cuacm1 Callout device for ttyACM1
2452 168 char Eracom CSA7000 PCI encryption adaptor
2453 0 = /dev/ecsa0 First CSA7000
2454 1 = /dev/ecsa1 Second CSA7000
2457 169 char Eracom CSA8000 PCI encryption adaptor
2458 0 = /dev/ecsa8-0 First CSA8000
2459 1 = /dev/ecsa8-1 Second CSA8000
2462 170 char AMI MegaRAC remote access controller
2463 0 = /dev/megarac0 First MegaRAC card
2464 1 = /dev/megarac1 Second MegaRAC card
2467 171 char Reserved for IEEE 1394 (Firewire)
2469 172 char Moxa Intellio serial card
2470 0 = /dev/ttyMX0 First Moxa port
2471 1 = /dev/ttyMX1 Second Moxa port
2473 127 = /dev/ttyMX127 128th Moxa port
2474 128 = /dev/moxactl Moxa control port
2476 173 char Moxa Intellio serial card - alternate devices
2477 0 = /dev/cumx0 Callout device for ttyMX0
2478 1 = /dev/cumx1 Callout device for ttyMX1
2480 127 = /dev/cumx127 Callout device for ttyMX127
2482 174 char SmartIO serial card
2483 0 = /dev/ttySI0 First SmartIO port
2484 1 = /dev/ttySI1 Second SmartIO port
2487 175 char SmartIO serial card - alternate devices
2488 0 = /dev/cusi0 Callout device for ttySI0
2489 1 = /dev/cusi1 Callout device for ttySI1
2492 176 char nCipher nFast PCI crypto accelerator
2493 0 = /dev/nfastpci0 First nFast PCI device
2494 1 = /dev/nfastpci1 First nFast PCI device
2497 177 char TI PCILynx memory spaces
2498 0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
2500 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2501 16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
2503 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2504 32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
2506 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2508 178 char Giganet cLAN1xxx virtual interface adapter
2509 0 = /dev/clanvi0 First cLAN adapter
2510 1 = /dev/clanvi1 Second cLAN adapter
2513 179 block MMC block devices
2514 0 = /dev/mmcblk0 First SD/MMC card
2515 1 = /dev/mmcblk0p1 First partition on first MMC card
2516 8 = /dev/mmcblk1 Second SD/MMC card
2519 The start of next SD/MMC card can be configured with
2520 CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe
2521 time using the mmcblk.perdev_minors option. That would
2522 bump the offset between each card to be the configured
2523 value instead of the default 8.
2525 179 char CCube DVXChip-based PCI products
2526 0 = /dev/dvxirq0 First DVX device
2527 1 = /dev/dvxirq1 Second DVX device
2530 180 char USB devices
2531 0 = /dev/usb/lp0 First USB printer
2533 15 = /dev/usb/lp15 16th USB printer
2534 48 = /dev/usb/scanner0 First USB scanner
2536 63 = /dev/usb/scanner15 16th USB scanner
2537 64 = /dev/usb/rio500 Diamond Rio 500
2538 65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
2539 66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
2540 96 = /dev/usb/hiddev0 1st USB HID device
2542 111 = /dev/usb/hiddev15 16th USB HID device
2543 112 = /dev/usb/auer0 1st auerswald ISDN device
2545 127 = /dev/usb/auer15 16th auerswald ISDN device
2546 128 = /dev/usb/brlvgr0 First Braille Voyager device
2548 131 = /dev/usb/brlvgr3 Fourth Braille Voyager device
2549 132 = /dev/usb/idmouse ID Mouse (fingerprint scanner) device
2550 133 = /dev/usb/sisusbvga1 First SiSUSB VGA device
2552 140 = /dev/usb/sisusbvga8 Eighth SISUSB VGA device
2553 144 = /dev/usb/lcd USB LCD device
2554 160 = /dev/usb/legousbtower0 1st USB Legotower device
2556 175 = /dev/usb/legousbtower15 16th USB Legotower device
2557 176 = /dev/usb/usbtmc1 First USB TMC device
2559 191 = /dev/usb/usbtmc16 16th USB TMC device
2560 192 = /dev/usb/yurex1 First USB Yurex device
2562 209 = /dev/usb/yurex16 16th USB Yurex device
2564 180 block USB block devices
2565 0 = /dev/uba First USB block device
2566 8 = /dev/ubb Second USB block device
2567 16 = /dev/ubc Third USB block device
2570 181 char Conrad Electronic parallel port radio clocks
2571 0 = /dev/pcfclock0 First Conrad radio clock
2572 1 = /dev/pcfclock1 Second Conrad radio clock
2575 182 char Picture Elements THR2 binarizer
2576 0 = /dev/pethr0 First THR2 board
2577 1 = /dev/pethr1 Second THR2 board
2580 183 char SST 5136-DN DeviceNet interface
2581 0 = /dev/ss5136dn0 First DeviceNet interface
2582 1 = /dev/ss5136dn1 Second DeviceNet interface
2585 This device used to be assigned to major number 144.
2586 It had to be moved due to an unfortunate conflict.
2588 184 char Picture Elements' video simulator/sender
2589 0 = /dev/pevss0 First sender board
2590 1 = /dev/pevss1 Second sender board
2593 185 char InterMezzo high availability file system
2594 0 = /dev/intermezzo0 First cache manager
2595 1 = /dev/intermezzo1 Second cache manager
2598 See http://web.archive.org/web/20080115195241/
2599 http://inter-mezzo.org/index.html
2601 186 char Object-based storage control device
2602 0 = /dev/obd0 First obd control device
2603 1 = /dev/obd1 Second obd control device
2606 See ftp://ftp.lustre.org/pub/obd for code and information.
2608 187 char DESkey hardware encryption device
2609 0 = /dev/deskey0 First DES key
2610 1 = /dev/deskey1 Second DES key
2613 188 char USB serial converters
2614 0 = /dev/ttyUSB0 First USB serial converter
2615 1 = /dev/ttyUSB1 Second USB serial converter
2618 189 char USB serial converters - alternate devices
2619 0 = /dev/cuusb0 Callout device for ttyUSB0
2620 1 = /dev/cuusb1 Callout device for ttyUSB1
2623 190 char Kansas City tracker/tuner card
2624 0 = /dev/kctt0 First KCT/T card
2625 1 = /dev/kctt1 Second KCT/T card
2628 191 char Reserved for PCMCIA
2630 192 char Kernel profiling interface
2631 0 = /dev/profile Profiling control device
2632 1 = /dev/profile0 Profiling device for CPU 0
2633 2 = /dev/profile1 Profiling device for CPU 1
2636 193 char Kernel event-tracing interface
2637 0 = /dev/trace Tracing control device
2638 1 = /dev/trace0 Tracing device for CPU 0
2639 2 = /dev/trace1 Tracing device for CPU 1
2642 194 char linVideoStreams (LINVS)
2643 0 = /dev/mvideo/status0 Video compression status
2644 1 = /dev/mvideo/stream0 Video stream
2645 2 = /dev/mvideo/frame0 Single compressed frame
2646 3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2647 4 = /dev/mvideo/codec0 Direct codec access
2648 5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2650 16 = /dev/mvideo/status1 Second device
2652 32 = /dev/mvideo/status2 Third device
2655 240 = /dev/mvideo/status15 16th device
2658 195 char Nvidia graphics devices
2659 0 = /dev/nvidia0 First Nvidia card
2660 1 = /dev/nvidia1 Second Nvidia card
2662 255 = /dev/nvidiactl Nvidia card control device
2664 196 char Tormenta T1 card
2665 0 = /dev/tor/0 Master control channel for all cards
2666 1 = /dev/tor/1 First DS0
2667 2 = /dev/tor/2 Second DS0
2669 48 = /dev/tor/48 48th DS0
2670 49 = /dev/tor/49 First pseudo-channel
2671 50 = /dev/tor/50 Second pseudo-channel
2674 197 char OpenTNF tracing facility
2675 0 = /dev/tnf/t0 Trace 0 data extraction
2676 1 = /dev/tnf/t1 Trace 1 data extraction
2678 128 = /dev/tnf/status Tracing facility status
2679 130 = /dev/tnf/trace Tracing device
2681 198 char Total Impact TPMP2 quad coprocessor PCI card
2682 0 = /dev/tpmp2/0 First card
2683 1 = /dev/tpmp2/1 Second card
2686 199 char Veritas volume manager (VxVM) volumes
2687 0 = /dev/vx/rdsk/*/* First volume
2688 1 = /dev/vx/rdsk/*/* Second volume
2691 199 block Veritas volume manager (VxVM) volumes
2692 0 = /dev/vx/dsk/*/* First volume
2693 1 = /dev/vx/dsk/*/* Second volume
2696 The namespace in these directories is maintained by
2697 the user space VxVM software.
2699 200 char Veritas VxVM configuration interface
2700 0 = /dev/vx/config Configuration access node
2701 1 = /dev/vx/trace Volume i/o trace access node
2702 2 = /dev/vx/iod Volume i/o daemon access node
2703 3 = /dev/vx/info Volume information access node
2704 4 = /dev/vx/task Volume tasks access node
2705 5 = /dev/vx/taskmon Volume tasks monitor daemon
2707 201 char Veritas VxVM dynamic multipathing driver
2708 0 = /dev/vx/rdmp/* First multipath device
2709 1 = /dev/vx/rdmp/* Second multipath device
2711 201 block Veritas VxVM dynamic multipathing driver
2712 0 = /dev/vx/dmp/* First multipath device
2713 1 = /dev/vx/dmp/* Second multipath device
2716 The namespace in these directories is maintained by
2717 the user space VxVM software.
2719 202 char CPU model-specific registers
2720 0 = /dev/cpu/0/msr MSRs on CPU 0
2721 1 = /dev/cpu/1/msr MSRs on CPU 1
2724 202 block Xen Virtual Block Device
2725 0 = /dev/xvda First Xen VBD whole disk
2726 16 = /dev/xvdb Second Xen VBD whole disk
2727 32 = /dev/xvdc Third Xen VBD whole disk
2729 240 = /dev/xvdp Sixteenth Xen VBD whole disk
2731 Partitions are handled in the same way as for IDE
2732 disks (see major number 3) except that the limit on
2735 203 char CPU CPUID information
2736 0 = /dev/cpu/0/cpuid CPUID on CPU 0
2737 1 = /dev/cpu/1/cpuid CPUID on CPU 1
2740 204 char Low-density serial ports
2741 0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2742 1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2743 2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2744 3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2745 4 = /dev/ttyFB0 Intel Footbridge (ARM)
2746 5 = /dev/ttySA0 StrongARM builtin serial port 0
2747 6 = /dev/ttySA1 StrongARM builtin serial port 1
2748 7 = /dev/ttySA2 StrongARM builtin serial port 2
2749 8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2750 9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2751 10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2752 11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2753 12 = /dev/ttyFW0 Firmware console - port 0
2754 13 = /dev/ttyFW1 Firmware console - port 1
2755 14 = /dev/ttyFW2 Firmware console - port 2
2756 15 = /dev/ttyFW3 Firmware console - port 3
2757 16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2759 31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2760 32 = /dev/ttyDB0 DataBooster serial port 0
2762 39 = /dev/ttyDB7 DataBooster serial port 7
2763 40 = /dev/ttySG0 SGI Altix console port
2764 41 = /dev/ttySMX0 Motorola i.MX - port 0
2765 42 = /dev/ttySMX1 Motorola i.MX - port 1
2766 43 = /dev/ttySMX2 Motorola i.MX - port 2
2767 44 = /dev/ttyMM0 Marvell MPSC - port 0
2768 45 = /dev/ttyMM1 Marvell MPSC - port 1
2769 46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
2771 47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
2772 50 = /dev/ttyIOC0 Altix serial card
2774 81 = /dev/ttyIOC31 Altix serial card
2775 82 = /dev/ttyVR0 NEC VR4100 series SIU
2776 83 = /dev/ttyVR1 NEC VR4100 series DSIU
2777 84 = /dev/ttyIOC84 Altix ioc4 serial card
2779 115 = /dev/ttyIOC115 Altix ioc4 serial card
2780 116 = /dev/ttySIOC0 Altix ioc3 serial card
2782 147 = /dev/ttySIOC31 Altix ioc3 serial card
2783 148 = /dev/ttyPSC0 PPC PSC - port 0
2785 153 = /dev/ttyPSC5 PPC PSC - port 5
2786 154 = /dev/ttyAT0 ATMEL serial port 0
2788 169 = /dev/ttyAT15 ATMEL serial port 15
2789 170 = /dev/ttyNX0 Hilscher netX serial port 0
2791 185 = /dev/ttyNX15 Hilscher netX serial port 15
2792 186 = /dev/ttyJ0 JTAG1 DCC protocol based serial port emulation
2793 187 = /dev/ttyUL0 Xilinx uartlite - port 0
2795 190 = /dev/ttyUL3 Xilinx uartlite - port 3
2796 191 = /dev/xvc0 Xen virtual console - port 0
2797 192 = /dev/ttyPZ0 pmac_zilog - port 0
2799 195 = /dev/ttyPZ3 pmac_zilog - port 3
2800 196 = /dev/ttyTX0 TX39/49 serial port 0
2802 204 = /dev/ttyTX7 TX39/49 serial port 7
2803 205 = /dev/ttySC0 SC26xx serial port 0
2804 206 = /dev/ttySC1 SC26xx serial port 1
2805 207 = /dev/ttySC2 SC26xx serial port 2
2806 208 = /dev/ttySC3 SC26xx serial port 3
2807 209 = /dev/ttyMAX0 MAX3100 serial port 0
2808 210 = /dev/ttyMAX1 MAX3100 serial port 1
2809 211 = /dev/ttyMAX2 MAX3100 serial port 2
2810 212 = /dev/ttyMAX3 MAX3100 serial port 3
2812 205 char Low-density serial ports (alternate device)
2813 0 = /dev/culu0 Callout device for ttyLU0
2814 1 = /dev/culu1 Callout device for ttyLU1
2815 2 = /dev/culu2 Callout device for ttyLU2
2816 3 = /dev/culu3 Callout device for ttyLU3
2817 4 = /dev/cufb0 Callout device for ttyFB0
2818 5 = /dev/cusa0 Callout device for ttySA0
2819 6 = /dev/cusa1 Callout device for ttySA1
2820 7 = /dev/cusa2 Callout device for ttySA2
2821 8 = /dev/cusc0 Callout device for ttySC0
2822 9 = /dev/cusc1 Callout device for ttySC1
2823 10 = /dev/cusc2 Callout device for ttySC2
2824 11 = /dev/cusc3 Callout device for ttySC3
2825 12 = /dev/cufw0 Callout device for ttyFW0
2826 13 = /dev/cufw1 Callout device for ttyFW1
2827 14 = /dev/cufw2 Callout device for ttyFW2
2828 15 = /dev/cufw3 Callout device for ttyFW3
2829 16 = /dev/cuam0 Callout device for ttyAM0
2831 31 = /dev/cuam15 Callout device for ttyAM15
2832 32 = /dev/cudb0 Callout device for ttyDB0
2834 39 = /dev/cudb7 Callout device for ttyDB7
2835 40 = /dev/cusg0 Callout device for ttySG0
2836 41 = /dev/ttycusmx0 Callout device for ttySMX0
2837 42 = /dev/ttycusmx1 Callout device for ttySMX1
2838 43 = /dev/ttycusmx2 Callout device for ttySMX2
2839 46 = /dev/cucpm0 Callout device for ttyCPM0
2841 49 = /dev/cucpm5 Callout device for ttyCPM5
2842 50 = /dev/cuioc40 Callout device for ttyIOC40
2844 81 = /dev/cuioc431 Callout device for ttyIOC431
2845 82 = /dev/cuvr0 Callout device for ttyVR0
2846 83 = /dev/cuvr1 Callout device for ttyVR1
2848 206 char OnStream SC-x0 tape devices
2849 0 = /dev/osst0 First OnStream SCSI tape, mode 0
2850 1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2852 32 = /dev/osst0l First OnStream SCSI tape, mode 1
2853 33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2855 64 = /dev/osst0m First OnStream SCSI tape, mode 2
2856 65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2858 96 = /dev/osst0a First OnStream SCSI tape, mode 3
2859 97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2861 128 = /dev/nosst0 No rewind version of /dev/osst0
2862 129 = /dev/nosst1 No rewind version of /dev/osst1
2864 160 = /dev/nosst0l No rewind version of /dev/osst0l
2865 161 = /dev/nosst1l No rewind version of /dev/osst1l
2867 192 = /dev/nosst0m No rewind version of /dev/osst0m
2868 193 = /dev/nosst1m No rewind version of /dev/osst1m
2870 224 = /dev/nosst0a No rewind version of /dev/osst0a
2871 225 = /dev/nosst1a No rewind version of /dev/osst1a
2874 The OnStream SC-x0 SCSI tapes do not support the
2875 standard SCSI SASD command set and therefore need
2876 their own driver "osst". Note that the IDE, USB (and
2877 maybe ParPort) versions may be driven via ide-scsi or
2878 usb-storage SCSI emulation and this osst device and
2879 driver as well. The ADR-x0 drives are QIC-157
2880 compliant and don't need osst.
2882 207 char Compaq ProLiant health feature indicate
2883 0 = /dev/cpqhealth/cpqw Redirector interface
2884 1 = /dev/cpqhealth/crom EISA CROM
2885 2 = /dev/cpqhealth/cdt Data Table
2886 3 = /dev/cpqhealth/cevt Event Log
2887 4 = /dev/cpqhealth/casr Automatic Server Recovery
2888 5 = /dev/cpqhealth/cecc ECC Memory
2889 6 = /dev/cpqhealth/cmca Machine Check Architecture
2890 7 = /dev/cpqhealth/ccsm Deprecated CDT
2891 8 = /dev/cpqhealth/cnmi NMI Handling
2892 9 = /dev/cpqhealth/css Sideshow Management
2893 10 = /dev/cpqhealth/cram CMOS interface
2894 11 = /dev/cpqhealth/cpci PCI IRQ interface
2896 208 char User space serial ports
2897 0 = /dev/ttyU0 First user space serial port
2898 1 = /dev/ttyU1 Second user space serial port
2901 209 char User space serial ports (alternate devices)
2902 0 = /dev/cuu0 Callout device for ttyU0
2903 1 = /dev/cuu1 Callout device for ttyU1
2906 210 char SBE, Inc. sync/async serial card
2907 0 = /dev/sbei/wxcfg0 Configuration device for board 0
2908 1 = /dev/sbei/dld0 Download device for board 0
2909 2 = /dev/sbei/wan00 WAN device, port 0, board 0
2910 3 = /dev/sbei/wan01 WAN device, port 1, board 0
2911 4 = /dev/sbei/wan02 WAN device, port 2, board 0
2912 5 = /dev/sbei/wan03 WAN device, port 3, board 0
2913 6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2914 7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2915 8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2916 9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2917 10 = /dev/sbei/wxcfg1 Configuration device for board 1
2918 11 = /dev/sbei/dld1 Download device for board 1
2919 12 = /dev/sbei/wan10 WAN device, port 0, board 1
2920 13 = /dev/sbei/wan11 WAN device, port 1, board 1
2921 14 = /dev/sbei/wan12 WAN device, port 2, board 1
2922 15 = /dev/sbei/wan13 WAN device, port 3, board 1
2923 16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2924 17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2925 18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2926 19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2929 Yes, each board is really spaced 10 (decimal) apart.
2931 211 char Addinum CPCI1500 digital I/O card
2932 0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2933 1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2936 212 char LinuxTV.org DVB driver subsystem
2937 0 = /dev/dvb/adapter0/video0 first video decoder of first card
2938 1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2939 2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2940 3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2941 4 = /dev/dvb/adapter0/demux0 first demux device of first card
2942 5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2943 6 = /dev/dvb/adapter0/ca0 first common access port of first card
2944 7 = /dev/dvb/adapter0/net0 first network device of first card
2945 8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2946 9 = /dev/dvb/adapter0/video1 second video decoder of first card
2948 64 = /dev/dvb/adapter1/video0 first video decoder of second card
2950 128 = /dev/dvb/adapter2/video0 first video decoder of third card
2952 196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2954 216 char Bluetooth RFCOMM TTY devices
2955 0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
2956 1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
2959 217 char Bluetooth RFCOMM TTY devices (alternate devices)
2960 0 = /dev/curf0 Callout device for rfcomm0
2961 1 = /dev/curf1 Callout device for rfcomm1
2964 218 char The Logical Company bus Unibus/Qbus adapters
2965 0 = /dev/logicalco/bci/0 First bus adapter
2966 1 = /dev/logicalco/bci/1 First bus adapter
2969 219 char The Logical Company DCI-1300 digital I/O card
2970 0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2971 1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2974 220 char Myricom Myrinet "GM" board
2975 0 = /dev/myricom/gm0 First Myrinet GM board
2976 1 = /dev/myricom/gmp0 First board "root access"
2977 2 = /dev/myricom/gm1 Second Myrinet GM board
2978 3 = /dev/myricom/gmp1 Second board "root access"
2982 0 = /dev/bus/vme/m0 First master image
2983 1 = /dev/bus/vme/m1 Second master image
2984 2 = /dev/bus/vme/m2 Third master image
2985 3 = /dev/bus/vme/m3 Fourth master image
2986 4 = /dev/bus/vme/s0 First slave image
2987 5 = /dev/bus/vme/s1 Second slave image
2988 6 = /dev/bus/vme/s2 Third slave image
2989 7 = /dev/bus/vme/s3 Fourth slave image
2990 8 = /dev/bus/vme/ctl Control
2992 It is expected that all VME bus drivers will use the
2993 same interface. For interface documentation see
2994 http://www.vmelinux.org/.
2996 224 char A2232 serial card
2997 0 = /dev/ttyY0 First A2232 port
2998 1 = /dev/ttyY1 Second A2232 port
3001 225 char A2232 serial card (alternate devices)
3002 0 = /dev/cuy0 Callout device for ttyY0
3003 1 = /dev/cuy1 Callout device for ttyY1
3006 226 char Direct Rendering Infrastructure (DRI)
3007 0 = /dev/dri/card0 First graphics card
3008 1 = /dev/dri/card1 Second graphics card
3011 227 char IBM 3270 terminal Unix tty access
3012 1 = /dev/3270/tty1 First 3270 terminal
3013 2 = /dev/3270/tty2 Seconds 3270 terminal
3016 228 char IBM 3270 terminal block-mode access
3017 0 = /dev/3270/tub Controlling interface
3018 1 = /dev/3270/tub1 First 3270 terminal
3019 2 = /dev/3270/tub2 Second 3270 terminal
3022 229 char IBM iSeries/pSeries virtual console
3023 0 = /dev/hvc0 First console port
3024 1 = /dev/hvc1 Second console port
3027 230 char IBM iSeries virtual tape
3028 0 = /dev/iseries/vt0 First virtual tape, mode 0
3029 1 = /dev/iseries/vt1 Second virtual tape, mode 0
3031 32 = /dev/iseries/vt0l First virtual tape, mode 1
3032 33 = /dev/iseries/vt1l Second virtual tape, mode 1
3034 64 = /dev/iseries/vt0m First virtual tape, mode 2
3035 65 = /dev/iseries/vt1m Second virtual tape, mode 2
3037 96 = /dev/iseries/vt0a First virtual tape, mode 3
3038 97 = /dev/iseries/vt1a Second virtual tape, mode 3
3040 128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
3041 129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
3043 160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
3044 161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
3046 192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
3047 193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
3049 224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
3050 225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
3053 "No rewind" refers to the omission of the default
3054 automatic rewind on device close. The MTREW or MTOFFL
3055 ioctl()'s can be used to rewind the tape regardless of
3056 the device used to access it.
3059 0 = /dev/infiniband/umad0
3060 1 = /dev/infiniband/umad1
3062 63 = /dev/infiniband/umad63 63rd InfiniBandMad device
3063 64 = /dev/infiniband/issm0 First InfiniBand IsSM device
3064 65 = /dev/infiniband/issm1 Second InfiniBand IsSM device
3066 127 = /dev/infiniband/issm63 63rd InfiniBand IsSM device
3067 128 = /dev/infiniband/uverbs0 First InfiniBand verbs device
3068 129 = /dev/infiniband/uverbs1 Second InfiniBand verbs device
3070 159 = /dev/infiniband/uverbs31 31st InfiniBand verbs device
3072 232 char Biometric Devices
3073 0 = /dev/biometric/sensor0/fingerprint first fingerprint sensor on first device
3074 1 = /dev/biometric/sensor0/iris first iris sensor on first device
3075 2 = /dev/biometric/sensor0/retina first retina sensor on first device
3076 3 = /dev/biometric/sensor0/voiceprint first voiceprint sensor on first device
3077 4 = /dev/biometric/sensor0/facial first facial sensor on first device
3078 5 = /dev/biometric/sensor0/hand first hand sensor on first device
3080 10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device
3082 20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device
3085 233 char PathScale InfiniPath interconnect
3086 0 = /dev/ipath Primary device for programs (any unit)
3087 1 = /dev/ipath0 Access specifically to unit 0
3088 2 = /dev/ipath1 Access specifically to unit 1
3090 4 = /dev/ipath3 Access specifically to unit 3
3091 129 = /dev/ipath_sma Device used by Subnet Management Agent
3092 130 = /dev/ipath_diag Device used by diagnostics programs
3096 240-254 char LOCAL/EXPERIMENTAL USE
3098 240-254 block LOCAL/EXPERIMENTAL USE
3099 Allocated for local/experimental use. For devices not
3100 assigned official numbers, these ranges should be
3101 used in order to avoid conflicting with future assignments.
3107 This major is reserved to assist the expansion to a
3108 larger number space. No device nodes with this major
3109 should ever be created on the filesystem.
3110 (This is probably not true anymore, but I'll leave it
3113 ---LARGE MAJORS!!!!!---
3115 256 char Equinox SST multi-port serial boards
3116 0 = /dev/ttyEQ0 First serial port on first Equinox SST board
3117 127 = /dev/ttyEQ127 Last serial port on first Equinox SST board
3118 128 = /dev/ttyEQ128 First serial port on second Equinox SST board
3120 1027 = /dev/ttyEQ1027 Last serial port on eighth Equinox SST board
3122 256 block Resident Flash Disk Flash Translation Layer
3123 0 = /dev/rfda First RFD FTL layer
3124 16 = /dev/rfdb Second RFD FTL layer
3126 240 = /dev/rfdp 16th RFD FTL layer
3128 257 char Phoenix Technologies Cryptographic Services Driver
3129 0 = /dev/ptlsec Crypto Services Driver
3131 257 block SSFDC Flash Translation Layer filesystem
3132 0 = /dev/ssfdca First SSFDC layer
3133 8 = /dev/ssfdcb Second SSFDC layer
3134 16 = /dev/ssfdcc Third SSFDC layer
3135 24 = /dev/ssfdcd 4th SSFDC layer
3136 32 = /dev/ssfdce 5th SSFDC layer
3137 40 = /dev/ssfdcf 6th SSFDC layer
3138 48 = /dev/ssfdcg 7th SSFDC layer
3139 56 = /dev/ssfdch 8th SSFDC layer
3141 258 block ROM/Flash read-only translation layer
3142 0 = /dev/blockrom0 First ROM card's translation layer interface
3143 1 = /dev/blockrom1 Second ROM card's translation layer interface
3146 259 block Block Extended Major
3147 Used dynamically to hold additional partition minor
3148 numbers and allow large numbers of partitions per device
3150 259 char FPGA configuration interfaces
3151 0 = /dev/icap0 First Xilinx internal configuration
3152 1 = /dev/icap1 Second Xilinx internal configuration
3154 260 char OSD (Object-based-device) SCSI Device
3155 0 = /dev/osd0 First OSD Device
3156 1 = /dev/osd1 Second OSD Device
3158 255 = /dev/osd255 256th OSD Device
3160 **** ADDITIONAL /dev DIRECTORY ENTRIES
3162 This section details additional entries that should or may exist in
3163 the /dev directory. It is preferred that symbolic links use the same
3164 form (absolute or relative) as is indicated here. Links are
3165 classified as "hard" or "symbolic" depending on the preferred type of
3166 link; if possible, the indicated type of link should be used.
3171 These links should exist on all systems:
3173 /dev/fd /proc/self/fd symbolic File descriptors
3174 /dev/stdin fd/0 symbolic stdin file descriptor
3175 /dev/stdout fd/1 symbolic stdout file descriptor
3176 /dev/stderr fd/2 symbolic stderr file descriptor
3177 /dev/nfsd socksys symbolic Required by iBCS-2
3178 /dev/X0R null symbolic Required by iBCS-2
3180 Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3184 It is recommended that these links exist on all systems:
3186 /dev/core /proc/kcore symbolic Backward compatibility
3187 /dev/ramdisk ram0 symbolic Backward compatibility
3188 /dev/ftape qft0 symbolic Backward compatibility
3189 /dev/bttv0 video0 symbolic Backward compatibility
3190 /dev/radio radio0 symbolic Backward compatibility
3191 /dev/i2o* /dev/i2o/* symbolic Backward compatibility
3192 /dev/scd? sr? hard Alternate SCSI CD-ROM name
3194 Locally defined links
3196 The following links may be established locally to conform to the
3197 configuration of the system. This is merely a tabulation of existing
3198 practice, and does not constitute a recommendation. However, if they
3199 exist, they should have the following uses.
3201 /dev/mouse mouse port symbolic Current mouse device
3202 /dev/tape tape device symbolic Current tape device
3203 /dev/cdrom CD-ROM device symbolic Current CD-ROM device
3204 /dev/cdwriter CD-writer symbolic Current CD-writer device
3205 /dev/scanner scanner symbolic Current scanner device
3206 /dev/modem modem port symbolic Current dialout device
3207 /dev/root root device symbolic Current root filesystem
3208 /dev/swap swap device symbolic Current swap device
3210 /dev/modem should not be used for a modem which supports dialin as
3211 well as dialout, as it tends to cause lock file problems. If it
3212 exists, /dev/modem should point to the appropriate primary TTY device
3213 (the use of the alternate callout devices is deprecated).
3215 For SCSI devices, /dev/tape and /dev/cdrom should point to the
3216 ``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3217 /dev/cdwriter and /dev/scanner should point to the appropriate generic
3218 SCSI devices (/dev/sg*).
3220 /dev/mouse may point to a primary serial TTY device, a hardware mouse
3221 device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3225 Non-transient sockets and named pipes may exist in /dev. Common entries are:
3227 /dev/printer socket lpd local socket
3228 /dev/log socket syslog local socket
3229 /dev/gpmdata socket gpm mouse multiplexer
3233 The following names are reserved for mounting special filesystems
3234 under /dev. These special filesystems provide kernel interfaces that
3235 cannot be provided with standard device nodes.
3237 /dev/pts devpts PTY slave filesystem
3238 /dev/shm tmpfs POSIX shared memory maintenance access
3240 **** TERMINAL DEVICES
3242 Terminal, or TTY devices are a special class of character devices. A
3243 terminal device is any device that could act as a controlling terminal
3244 for a session; this includes virtual consoles, serial ports, and
3245 pseudoterminals (PTYs).
3247 All terminal devices share a common set of capabilities known as line
3248 disciplines; these include the common terminal line discipline as well
3249 as SLIP and PPP modes.
3251 All terminal devices are named similarly; this section explains the
3252 naming and use of the various types of TTYs. Note that the naming
3253 conventions include several historical warts; some of these are
3254 Linux-specific, some were inherited from other systems, and some
3255 reflect Linux outgrowing a borrowed convention.
3257 A hash mark (#) in a device name is used here to indicate a decimal
3258 number without leading zeroes.
3260 Virtual consoles and the console device
3262 Virtual consoles are full-screen terminal displays on the system video
3263 monitor. Virtual consoles are named /dev/tty#, with numbering
3264 starting at /dev/tty1; /dev/tty0 is the current virtual console.
3265 /dev/tty0 is the device that should be used to access the system video
3266 card on those architectures for which the frame buffer devices
3267 (/dev/fb*) are not applicable. Do not use /dev/console
3270 The console device, /dev/console, is the device to which system
3271 messages should be sent, and on which logins should be permitted in
3272 single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3273 by the kernel; for previous versions it should be a symbolic link to
3274 either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3275 a serial port primary (tty*, not cu*) device, depending on the
3276 configuration of the system.
3280 Serial ports are RS-232 serial ports and any device which simulates
3281 one, either in hardware (such as internal modems) or in software (such
3282 as the ISDN driver.) Under Linux, each serial ports has two device
3283 names, the primary or callin device and the alternate or callout one.
3284 Each kind of device is indicated by a different letter. For any
3285 letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3286 respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3287 correspond to /dev/cua# and /dev/cub#. In the future, it should be
3288 expected that multiple letters will be used; all letters will be upper
3289 case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3290 "cu" device (e.g. /dev/cudp#).
3292 The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3294 The alternate devices provide for kernel-based exclusion and somewhat
3295 different defaults than the primary devices. Their main purpose is to
3296 allow the use of serial ports with programs with no inherent or broken
3297 support for serial ports. Their use is deprecated, and they may be
3298 removed from a future version of Linux.
3300 Arbitration of serial ports is provided by the use of lock files with
3301 the names /var/lock/LCK..ttyX#. The contents of the lock file should
3302 be the PID of the locking process as an ASCII number.
3304 It is common practice to install links such as /dev/modem
3305 which point to serial ports. In order to ensure proper locking in the
3306 presence of these links, it is recommended that software chase
3307 symlinks and lock all possible names; additionally, it is recommended
3308 that a lock file be installed with the corresponding alternate
3309 device. In order to avoid deadlocks, it is recommended that the locks
3310 are acquired in the following order, and released in the reverse:
3312 1. The symbolic link name, if any (/var/lock/LCK..modem)
3313 2. The "tty" name (/var/lock/LCK..ttyS2)
3314 3. The alternate device name (/var/lock/LCK..cua2)
3316 In the case of nested symbolic links, the lock files should be
3317 installed in the order the symlinks are resolved.
3319 Under no circumstances should an application hold a lock while waiting
3320 for another to be released. In addition, applications which attempt
3321 to create lock files for the corresponding alternate device names
3322 should take into account the possibility of being used on a non-serial
3323 port TTY, for which no alternate device would exist.
3325 Pseudoterminals (PTYs)
3327 Pseudoterminals, or PTYs, are used to create login sessions or provide
3328 other capabilities requiring a TTY line discipline (including SLIP or
3329 PPP capability) to arbitrary data-generation processes. Each PTY has
3330 a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3331 /dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3332 allowing each master side to be opened only once.
3334 Once the master side has been opened, the corresponding slave device
3335 can be used in the same manner as any TTY device. The master and
3336 slave devices are connected by the kernel, generating the equivalent
3337 of a bidirectional pipe with TTY capabilities.
3339 Recent versions of the Linux kernels and GNU libc contain support for
3340 the System V/Unix98 naming scheme for PTYs, which assigns a common
3341 device, /dev/ptmx, to all the masters (opening it will automatically
3342 give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3343 for the slaves; the slaves are named with decimal integers (/dev/pts/#
3344 in our notation). This removes the problem of exhausting the
3345 namespace and enables the kernel to automatically create the device
3346 nodes for the slaves on demand using the "devpts" filesystem.
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