The following list indicates the normal values stored for each disk entry.
Name Type Description |
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, ns*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 |
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' |
/etc/disktab