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- DISKTAB(5) UNIX Programmer's Manual DISKTAB(5)
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- NNAAMMEE
- ddiisskkttaabb - disk description file
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- SSYYNNOOPPSSIISS
- ##iinncclluuddee <<ddiisskkttaabb..hh>>
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- DDEESSCCRRIIPPTTIIOONN
- DDiisskkttaabb is a simple database which describes disk geometries and disk
- partition characteristics. It is used to initialize the disk label on
- the disk. The format is patterned after the termcap(5) terminal data
- base. Entries in ddiisskkttaabb consist of a number of `:' separated fields.
- The first entry for each disk gives the names which are known for the
- disk, separated by `|' characters. The last name given should be a long
- name fully identifying the disk.
-
- The following list indicates the normal values stored for each disk en-
- try.
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- NNaammee TTyyppee DDeessccrriippttiioonn
- ty str Type of disk (e.g. removable, winchester)
- dt str Type of controller (e.g. SMD, ESDI, floppy)
- ns num Number of sectors per track
- nt num Number of tracks per cylinder
- nc num Total number of cylinders on the disk
- sc num Number of sectors per cylinder, nc*nt default
- su num Number of sectors per unit, sc*nc default
- se num Sector size in bytes, DEV_BSIZE default
- sf bool Controller supports bad144-style bad sector forwarding
- rm num Rotation speed, rpm, 3600 default
- sk num Sector skew per track, default 0
- cs num Sector skew per cylinder, default 0
- hs num Headswitch time, usec, default 0
- ts num One-cylinder seek time, usec, default 0
- il num Sector interleave (n:1), 1 default
- d[0-4] num Drive-type-dependent parameters
- bs num Boot block size, default BBSIZE
- sb num Superblock size, default SBSIZE
- ba num Block size for partition `a' (bytes)
- bd num Block size for partition `d' (bytes)
- be num Block size for partition `e' (bytes)
- bf num Block size for partition `f' (bytes)
- bg num Block size for partition `g' (bytes)
- bh num Block size for partition `h' (bytes)
- fa num Fragment size for partition `a' (bytes)
- fd num Fragment size for partition `d' (bytes)
- fe num Fragment size for partition `e' (bytes)
- ff num Fragment size for partition `f' (bytes)
- fg num Fragment size for partition `g' (bytes)
- fh num Fragment size for partition `h' (bytes)
- oa num Offset of partition `a' in sectors
- ob num Offset of partition `b' in sectors
- oc num Offset of partition `c' in sectors
- od num Offset of partition `d' in sectors
- oe num Offset of partition `e' in sectors
- of num Offset of partition `f' in sectors
- og num Offset of partition `g' in sectors
- oh num Offset of partition `h' in sectors
- pa num Size of partition `a' in sectors
- pb num Size of partition `b' in sectors
- pc num Size of partition `c' in sectors
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- pd num Size of partition `d' in sectors
- pe num Size of partition `e' in sectors
- pf num Size of partition `f' in sectors
- pg num Size of partition `g' in sectors
- ph num Size of partition `h' in sectors
- ta str Partition type of partition `a' (4.2BSD filesystem,
- swap, etc)
- tb str Partition type of partition `b'
- tc str Partition type of partition `c'
- td str Partition type of partition `d'
- te str Partition type of partition `e'
- tf str Partition type of partition `f'
- tg str Partition type of partition `g'
- th str Partition type of partition `h'
-
- FFIILLEESS
- /etc/disktab
-
- SSEEEE AALLSSOO
- getdiskbyname(3), disklabel(5), disklabel(8), newfs(8)
-
- HHIISSTTOORRYY
- The ddiisskkttaabb description file appeared in 4.2BSD.
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- 4.2 Berkeley Distribution June 5, 1993 2
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