000-000 blockxxx 0000 T/dev/crambamboli foo 0Unnamed devices (NFS mounts, loopback devices)0 reserved as null device number
000-000 blockxxx 0000 T/dev/crambamboli foo 1char Memory devices1 /dev/mem Physical memory access
2 /dev/kmem Kernel virtual memory access
3 /dev/null Null device
4 /dev/port I/O port access
5 /dev/zero Null byte source
6 /dev/core OBSOLETE - should be a link to /proc/kcore
7 /dev/full Returns ENOSPC on write
block RAM disk
1 /dev/ramdisk RAM disk
000-000 blockxxx 0000 T/dev/crambamboli foo 2char Reserved for PTY's <tytso@athena.mit.edu>block Floppy disks
0 /dev/fd0 Controller 1, drive 1 autodetect
1 /dev/fd1 Controller 1, drive 2 autodetect
2 /dev/fd2 Controller 1, drive 3 autodetect
3 /dev/fd3 Controller 1, drive 4 autodetect
128 /dev/fd4 Controller 2, drive 1 autodetect
129 /dev/fd5 Controller 2, drive 2 autodetect
130 /dev/fd6 Controller 2, drive 3 autodetect
131 /dev/fd7 Controller 2, drive 4 autodetect
To specify format, add to the autodetect device number
0 /dev/fd? Autodetect format
4 /dev/fd?d360 5.25" 360K in a 360K drive
20 /dev/fd?h360 5.25" 360K in a 1200K drive
48 /dev/fd?h410 5.25" 410K in a 1200K drive
64 /dev/fd?h420 5.25" 420K in a 1200K drive
24 /dev/fd?h720 5.25" 720K in a 1200K drive
80 /dev/fd?h880 5.25" 880K in a 1200K drive
8 /dev/fd?h1200 5.25" 1200K in a 1200K drive
40 /dev/fd?h1440 5.25" 1440K in a 1200K drive
56 /dev/fd?h1476 5.25" 1476K in a 1200K drive
72 /dev/fd?h1494 5.25" 1494K in a 1200K drive
92 /dev/fd?h1600 5.25" 1600K in a 1200K drive
12 /dev/fd?u360 3.5" 360K Double Density
16 /dev/fd?u720 3.5" 720K Double Density
120 /dev/fd?u800 3.5" 800K Double Density
52 /dev/fd?u820 3.5" 820K Double Density
68 /dev/fd?u830 3.5" 830K Double Density
84 /dev/fd?u1040 3.5" 1040K Double Density
88 /dev/fd?u1120 3.5" 1120K Double Density
28 /dev/fd?u1440 3.5" 1440K High Density
124 /dev/fd?u1600 3.5" 1600K High Density
44 /dev/fd?u1680 3.5" 1680K High Density
60 /dev/fd?u1722 3.5" 1722K High Density
76 /dev/fd?u1743 3.5" 1743K High Density
96 /dev/fd?u1760 3.5" 1760K High Density
116 /dev/fd?u1840 3.5" 1840K High Density
100 /dev/fd?u1920 3.5" 1920K High Density
32 /dev/fd?u2880 3.5" 2880K Extra Density
104 /dev/fd?u3200 3.5" 3200K Extra Density
108 /dev/fd?u3520 3.5" 3520K Extra Density
112 /dev/fd?u3840 3.5" 3840K Extra Density
36 /dev/fd?CompaQ Compaq 2880K drive; probably obsolete
Autodetectable format in a High Density (1440K) drive only
NOTE: The letter in the device name (d, q, h or u) signifies the type of drive supported: 5.25" Double Density (d), 5.25" Quad Density (q), 5.25" High Density (h) or 3.5" (any type, u). The capital letters D, H, or E for the 3.5" models have been deprecated, since the drive type is insignificant for these devices.
000-000 blockxxx 0000 T/dev/crambamboli foo 3char Reserved for PTY's <tytso@athena.mit.edu>block First MFM, RLL and IDE hard disk/CD-ROM interface
0 /dev/hda Master: whole disk (or CD-ROM)
64 /dev/hdb Slave: whole disk (or CD-ROM)
For partitions, add to the whole disk device number
0 /dev/hd? Whole disk
1 /dev/hd?1 First primary partition
2 /dev/hd?2 Second primary partition
3 /dev/hd?3 Third primary partition
4 /dev/hd?4 Fourth primary partition
5 /dev/hd?5 First logical partition
6 /dev/hd?6 Second logical partition
7 /dev/hd?7 Third logical partition
...
63 /dev/hd?63 59th logical partition
000-000 blockxxx 0000 T/dev/crambamboli foo 4char TTY devices0 /dev/console Console device
1 /dev/tty1 First virtual console
...
63 /dev/tty63 63rd virtual console
64 /dev/ttyS0 First serial port
...
127 /dev/ttyS63 64th serial port
128 /dev/ptyp0 First pseudo-tty master
...
191 /dev/ptysf 64th pseudo-tty master
192 /dev/ttyp0 First pseudo-tty slave
...
255 /dev/ttysf 64th pseudo-tty slave
Pseudo-tty's are named as follows:
000-000 blockxxx 0000 T/dev/crambamboli foo 5char Alternate TTY devices0 /dev/tty Current TTY device
64 /dev/cua0 Callout device corresponding to ttyS0
...
127 /dev/cua63 Callout device corresponding to ttyS63
000-000 blockxxx 0000 T/dev/crambamboli foo 6char Parallel printer devices0 /dev/lp0 First parallel printer (0x3bc)
1 /dev/lp1 Second parallel printer (0x378)
2 /dev/lp2 Third parallel printer (0x278)
Not all computers have the 0x3bc parallel port, hence the "first" printer may be either /dev/lp0 or /dev/lp1.
000-000 blockxxx 0000 T/dev/crambamboli foo 7char Virtual console access devices0 /dev/vcs Current vc text access
1 /dev/vcs1 tty1 text access
...
63 /dev/vcs63 tty63 text access
128 /dev/vcsa Current vc text/attribute access
129 /dev/vcsa1 tty1 text/attribute access
...
191 /dev/vcsa63 tty63 text/attribute access
NOTE: These devices permit both read and write access.
000-000 blockxxx 0000 T/dev/crambamboli foo 8block SCSI disk devices0 /dev/sda First SCSI disk whole disk
16 /dev/sdb Second SCSI disk whole disk
32 /dev/sdc Third SCSI disk whole disk
...
240 /dev/sdp Sixteenth SCSI disk whole disk
Partitions are handled in the same way as for IDE disks (see major number 3) except that the limit on logical partitions is 11 rather than 59 per disk.
000-000 blockxxx 0000 T/dev/crambamboli foo 9char SCSI tape devices0 /dev/st0 First SCSI tape
1 /dev/st1 Second SCSI tape
...
128 /dev/nst0 First SCSI tape, no rewind-on-close
129 /dev/nst1 Second SCSI tape, no rewind-on-close
...
block Multiple disk devices
0 /dev/md0 First device group
1 /dev/md1 Second device group
...
The multiple device driver is used to span a filesystem across multiple physical disks.
000-000 blockxxx 0000 T/dev/crambamboli foo 10char Non-serial mice, misc features0 /dev/logibm Logitech bus mouse
1 /dev/psaux PS/2-style mouse port
2 /dev/inportbm Microsoft Inport bus mouse
3 /dev/atibm ATI XL bus mouse
4 /dev/jbm J-mouse
4 /dev/amigamouse Amiga Mouse (68k)
5 /dev/atarimouse Atari Mouse (68k)
128 /dev/beep Fancy beep device
129 /dev/modreq Kernel module load request
000-000 blockxxx 0000 T/dev/crambamboli foo 11block SCSI CD-ROM devices0 /dev/sr0 First SCSI CD-ROM
1 /dev/sr1 Second SCSI CD-ROM
...
The prefix /dev/scd instead of /dev/sr has been used as well, and might make more sense.
000-000 blockxxx 0000 T/dev/crambamboli foo 12char QIC-02 tape2 /dev/ntpqic11 QIC-11, no rewind-on-close
3 /dev/tpqic11 QIC-11, rewind-on-close
4 /dev/ntpqic24 QIC-24, no rewind-on-close
5 /dev/tpqic24 QIC-24, rewind-on-close
6 /dev/ntpqic120 QIC-120, no rewind-on-close
7 /dev/tpqic120 QIC-120, rewind-on-close
8 /dev/ntpqic150 QIC-150, no rewind-on-close
9 /dev/tpqic150 QIC-150, rewind-on-close
The device names specified are proposed - if there are ``standard'' names for these devices, please let me know.
000-000 blockxxx 0000 T/dev/crambamboli foo block MSCDEX CD-ROM callback support0 /dev/dos_cd0 First MSCDEX CD-ROM
1 /dev/dos_cd1 Second MSCDEX CD-ROM
...
000-000 blockxxx 0000 T/dev/crambamboli foo 13char PC speaker0 /dev/pcmixer Emulates /dev/mixer
3 /dev/pcsp Emulates /dev/dsp (8-bit)
4 /dev/pcaudio Emulates /dev/audio
5 /dev/pcsp16 Emulates /dev/dsp (16-bit)
block 8-bit MFM/RLL/IDE controller
0 /dev/xda First XT disk whole disk
64 /dev/xdb Second XT disk whole disk
Partitions are handled in the same way as IDE disks (see major number 3).
000-000 blockxxx 0000 T/dev/crambamboli foo 14char Sound card0 /dev/mixer Mixer control
1 /dev/sequencer Audio sequencer
2 /dev/midi00 First MIDI port
3 /dev/dsp Digital audio
4 /dev/audio Sun-compatible digital audio
6 /dev/sndstat Sound card status information
8 /dev/sequencer2 Sequencer - alternate device
16 /dev/mixer1 Second soundcard mixer control
17 /dev/patmgr0 Sequencer patch manager
18 /dev/midi01 Second MIDI port
19 /dev/dsp1 Second soundcard digital audio
20 /dev/audio1 Second soundcard Sun digital audio
33 /dev/patmgr1 Sequencer patch manager
34 /dev/midi02 Third MIDI port
50 /dev/midi03 Fourth MIDI port
block BIOS harddrive callback support
0 /dev/dos_hda First BIOS harddrive whole disk
64 /dev/dos_hdb Second BIOS harddrive whole disk
128 /dev/dos_hdc Third BIOS harddrive whole disk
192 /dev/dos_hdd Fourth BIOS harddrive whole disk
Partitions are handled in the same way as IDE disks (see major number 3).
000-000 blockxxx 0000 T/dev/crambamboli foo 15char Joystick0 /dev/js0 First joystick
1 /dev/js1 Second joystick
block Sony CDU-31A/CDU-33A CD-ROM
0 /dev/sonycd Sony CDU-31A CD-ROM
000-000 blockxxx 0000 T/dev/crambamboli foo 16char Reserved for scannersblock GoldStar CD-ROM
0 /dev/gscd GoldStar CD-ROM
000-000 blockxxx 0000 T/dev/crambamboli foo 17char Chase serial card (Under development)0 /dev/ttyH0 First Chase port
1 /dev/ttyH1 Second Chase port
...
block Optics Storage CD-ROM (Under development)
0 /dev/optcd Optics Storage CD-ROM
000-000 blockxxx 0000 T/dev/crambamboli foo 18char Chase serial card - alternate devices0 /dev/cuh0 Callout device corresponding to ttyH0
1 /dev/cuh1 Callout device corresponding to ttyH1
...
block Sanyo CD-ROM (Under development)
0 ? Sanyo CD-ROM
000-000 blockxxx 0000 T/dev/crambamboli foo 19char Cyclades serial card32 /dev/ttyC0 First Cyclades port
...
63 /dev/ttyC31 32nd Cyclades port
It would make more sense for these to start at 0...
000-000 blockxxx 0000 T/dev/crambamboli foo block ``Double'' compressed disk0 /dev/double0 First compressed disk
...
7 /dev/double7 Eighth compressed disk
128 /dev/cdouble0 Mirror of first compressed disk
...
135 /dev/cdouble7 Mirror of eighth compressed disk
See the Double documentation for an explanation of the ``mirror'' devices.
000-000 blockxxx 0000 T/dev/crambamboli foo 20char Cyclades serial card - alternate devices32 /dev/cub0 Callout device corresponding to ttyC0
...
63 /dev/cub31 Callout device corresponding to ttyC31
block Hitachi CD-ROM (Under development)
0 /dev/hitcd Hitachi CD-ROM
000-000 blockxxx 0000 T/dev/crambamboli foo 21char Generic SCSI access0 /dev/sg0 First generic SCSI device
1 /dev/sg1 Second generic SCSI device
...
000-000 blockxxx 0000 T/dev/crambamboli foo 22char Digiboard serial card0 /dev/ttyD0 First Digiboard port
1 /dev/ttyD1 Second Digiboard port
...
block Second MFM, RLL and IDE hard disk/CD-ROM interface
0 /dev/hdc Master: whole disk (or CD-ROM)
64 /dev/hdd Slave: whole disk (or CD-ROM)
Partitions are handled the same way as for the first interface (see major number 3).
000-000 blockxxx 0000 T/dev/crambamboli foo 23char Digiboard serial card - alternate devices0 /dev/cud0 Callout device corresponding to ttyD0
1 /dev/cud1 Callout device corresponding to ttyD1
...
block Mitsumi proprietary CD-ROM
0 /dev/mcd Mitsumi CD-ROM
000-000 blockxxx 0000 T/dev/crambamboli foo \ 24char Stallion serial card0 /dev/ttyE0 Stallion port 0 board 0
1 /dev/ttyE1 Stallion port 1 board 0
...
64 /dev/ttyE64 Stallion port 0 board 1
65 /dev/ttyE65 Stallion port 1 board 1
...
128 /dev/ttyE128 Stallion port 0 board 2
129 /dev/ttyE129 Stallion port 1 board 2
...
192 /dev/ttyE192 Stallion port 0 board 3
193 /dev/ttyE193 Stallion port 1 board 3
...
block Sony CDU-535 CD-ROM
0 /dev/cdu535 Sony CDU-535 CD-ROM
000-000 blockxxx 0000 T/dev/crambamboli foo 25char Stallion serial card - alternate devices0 /dev/cue0 Callout device corresponding to ttyE0
1 /dev/cue1 Callout device corresponding to ttyE1
...
64 /dev/cue64 Callout device corresponding to ttyE64
65 /dev/cue65 Callout device corresponding to ttyE65
...
128 /dev/cue128 Callout device corresponding to ttyE128
129 /dev/cue129 Callout device corresponding to ttyE129
...
192 /dev/cue192 Callout device corresponding to ttyE192
193 /dev/cue193 Callout device corresponding to ttyE193
...
block First Matsushita (Panasonic/SoundBlaster) CD-ROM
0 /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
1 /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
2 /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
3 /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
000-000 blockxxx 0000 T/dev/crambamboli foo 26char Frame grabbers0 /dev/wvisfgrab Quanta WinVision frame grabber
block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
0 /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
1 /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
2 /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
3 /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
000-000 blockxxx 0000 T/dev/crambamboli foo 27char QIC-117 tape0 /dev/rft0 Unit 0, rewind-on-close
1 /dev/rft1 Unit 1, rewind-on-close
2 /dev/rft2 Unit 2, rewind-on-close
3 /dev/rft3 Unit 3, rewind-on-close
4 /dev/nrft0 Unit 0, no rewind-on-close
5 /dev/nrft1 Unit 1, no rewind-on-close
6 /dev/nrft2 Unit 2, no rewind-on-close
7 /dev/nrft3 Unit 3, no rewind-on-close
block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
0 /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
1 /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
2 /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
3 /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
000-000 blockxxx 0000 T/dev/crambamboli foo 28char Stallion serial card - card programming0 /dev/staliomem0 First Stallion I/O card memory
1 /dev/staliomem1 Second Stallion I/O card memory
2 /dev/staliomem2 Third Stallion I/O card memory
3 /dev/staliomem3 Fourth Stallion I/O card memory
block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
0 /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
1 /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
2 /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
3 /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
block ACSI disk (68k)
0 /dev/ada First ACSI disk whole disk
16 /dev/adb Second ACSI disk whole disk
32 /dev/adc Third ACSI disk whole disk
...
240 /dev/adp Sixteenth ACSI disk whole disk
Partitions are handled in the same way as for IDE disks (see major number 3) except that the limit on logical partitions is 11 rather than 59 per disk.
000-000 blockxxx 0000 T/dev/crambamboli foo 29char Universal frame buffer0 /dev/fb0current First frame buffer
1 /dev/fb0autodetect
...
16 /dev/fb1current Second frame buffer
17 /dev/fb1autodetect
...
The universal frame buffer device is currently supported only on Linux/68k. The current device accesses the frame buffer at current resolution; the autodetect one at bootup (default) resolution. Minor numbers 2-15 within each frame buffer assignment are used for specific device-dependent resolutions. There appears to be no standard naming for these devices.
000-000 blockxxx 0000 T/dev/crambamboli foo block Aztech/Orchid/Okano/Wearnes CD-ROM0 /dev/aztcd Aztech CD-ROM
000-000 blockxxx 0000 T/dev/crambamboli foo 30char iBCS-2 compatibility devices0 /dev/socksys Socket access
1 /dev/spx SVR3 local X interface
2 /dev/inet/arp Network access
2 /dev/inet/icmp Network access
2 /dev/inet/ip Network access
2 /dev/inet/udp Network access
2 /dev/inet/tcp Network access
iBCS-2 requires /dev/nfsd to be a link to /dev/socksys and /dev/X0R to be a link to /dev/null.
000-000 blockxxx 0000 T/dev/crambamboli foo block Philips LMS CM-205 CD-ROM0 /dev/cm205cd Philips LMS CM-205 CD-ROM
/dev/lmscd is an older name for this drive. This driver does not work with the CM-205MS CD-ROM.
000-000 blockxxx 0000 T/dev/crambamboli foo 31char MPU-401 MIDI0 /dev/mpu401data MPU-401 data port
1 /dev/mpu401stat MPU-401 status port
block ROM/flash memory card
0 /dev/rom0 First ROM card (rw)
...
7 /dev/rom7 Eighth ROM card (rw)
8 /dev/rrom0 First ROM card (ro)
...
15 /dev/rrom0 Eighth ROM card (ro)
16 /dev/flash0 First flash memory card (rw)
...
23 /dev/flash7 Eighth flash memory card (rw)
24 /dev/rflash0 First flash memory card (ro)
...
31 /dev/rflash7 Eighth flash memory card (ro)
The read-write (rw) devices support back-caching written data in RAM, as well as writing to flash RAM devices. The read-only devices (ro) support reading only.
000-000 blockxxx 0000 T/dev/crambamboli foo 32block Philips LMS CM-206 CD-ROM0 /dev/cm206cd Philips LMS CM-206 CD-ROM
000-000 blockxxx 0000 T/dev/crambamboli foo 33block Modular RAM disk0 /dev/ram0 First modular RAM disk
1 /dev/ram1 Second modular RAM disk
...
255 /dev/ram255 256th modular RAM disk
000-000 blockxxx 0000 T/dev/crambamboli foo 34-223 Unallocated
000-000 blockxxx 0000 T/dev/crambamboli foo 224-254 Local/experimental use
For devices not assigned official numbers, this range should be used, in order to avoid conflict with future assignments. Please note that MAX_CHRDEV and MAX_BLKDEV in linux/include/linux/major.h must be set to a value greater than the highest used major number. For a kernel using local/experimental devices, it is probably easiest to set both of these equal to 256. The memory cost above using the default value of 64 is 3K.
000-000 blockxxx 0000 T/dev/crambamboli foo 255Reserved