1# $OpenBSD: disktab,v 1.9 2010/04/06 03:54:42 deraadt Exp $ 2 3# Disk geometry and partition layout tables. 4# Key: 5# dt controller type 6# ty type of disk (fixed, removable, simulated) 7# d[0-4] drive-type-dependent parameters 8# ns #sectors/track 9# nt #tracks/cylinder 10# nc #cylinders/disk 11# sc #sectors/cylinder, ns*nt default 12# su #sectors/unit, sc*nc default 13# se sector size, DEV_BSIZE default 14# rm rpm, 3600 default 15# sf supports bad144-style bad sector forwarding 16# sk sector skew per track, default 0 17# cs sector skew per cylinder, default 0 18# hs headswitch time, default 0 19# ts one-cylinder seek time, default 0 20# il sector interleave (n:1), 1 default 21# bs boot block size, default BBSIZE 22# sb superblock size, default SBSIZE 23# o[a-p] partition offsets in sectors 24# p[a-p] partition sizes in sectors 25# b[a-p] partition block sizes in bytes 26# f[a-p] partition fragment sizes in bytes 27# t[a-p] partition types (filesystem, swap, etc) 28# 29# All partition sizes reserve space for bad sector tables. 30# (5 cylinders needed for maintenance + replacement sectors) 31# 32 33floppy576|3in|3.5in High Density Floppy, 5.76MB:\ 34 :dt=floppy:ty=floppy:se#512:nt#2:rm#300:ns#36:nc#160:\ 35 :pa#11520:oa#0:ba#4096:fa#512:ta=4.2BSD: \ 36 :pb#11520:ob#0:\ 37 :pc#11520:oc#0: 38 39floppy288|3in|3.5in High Density Floppy, 2.88MB:\ 40 :dt=floppy:ty=floppy:se#512:nt#2:rm#300:ns#36:nc#80:\ 41 :pa#5760:oa#0:ba#4096:fa#512:ta=4.2BSD: \ 42 :pb#5760:ob#0:\ 43 :pc#5760:oc#0: 44 45floppy|floppy3|3in|3.5in High Density Floppy:\ 46 :dt=floppy:ty=floppy:se#512:nt#2:rm#300:ns#18:nc#80:\ 47 :pa#2880:oa#0:ba#4096:fa#512:ta=4.2BSD: \ 48 :pb#2880:ob#0:\ 49 :pc#2880:oc#0: 50 51floppy5|5in|5.25in High Density Floppy:\ 52 :dt=floppy:ty=floppy:se#512:nt#2:rm#300:ns#15:nc#80:\ 53 :pa#2400:oa#0:ba#4096:fa#512:ta=4.2BSD: \ 54 :pb#2400:ob#0:bb#4096:fb#512:\ 55 :pc#2400:oc#0:bc#4096:fc#512: 56 57rdroot|ramdiskroot|RAM-disk root FS image:\ 58 :ty=ramdisk:se#512:nt#2:ns#140:nc#16:\ 59 :pa#4480:oa#0:ta=4.2BSD:ba#4480:fa#512:\ 60 :pb#0:ob#0:tb=swap:\ 61 :pc#4480:oc#0: 62