# # $OpenBSD: disktab,v 1.12 2001/01/19 15:01:24 jj Exp $ # $NetBSD: disktab,v 1.4 1995/11/28 05:40:23 jtc Exp $ # # Disk geometry and partition layout tables. # Key: # dt controller type # ty type of disk (fixed, removeable, simulated) # d[0-4] drive-type-dependent parameters # ns #sectors/track # nt #tracks/cylinder # nc #cylinders/disk # sc #sectors/cylinder, ns*nt default # su #sectors/unit, sc*nc default # se sector size, DEV_BSIZE default # rm rpm, 3600 default # sf supports bad144-style bad sector forwarding # sk sector skew per track, default 0 # cs sector skew per cylinder, default 0 # hs headswitch time, default 0 # ts one-cylinder seek time, default 0 # il sector interleave (n:1), 1 default # bs boot block size, default BBSIZE # sb superblock size, default SBSIZE # o[a-h] partition offsets in sectors # p[a-h] partition sizes in sectors # b[a-h] partition block sizes in bytes # f[a-h] partition fragment sizes in bytes # t[a-h] partition types (filesystem, swap, etc) # # All partition sizes reserve space for bad sector tables. # (5 cylinders needed for maintenance + replacement sectors) # floppy|floppy3|3in|Amiga 3.5in Double Density Floppy:\ :ty=floppy:se#512:nt#2:rm#300:ns#11:nc#80:\ :ts#3500:\ :ta=4.2BSD:pa#1760:oa#0:ba#4096:fa#512:\ :pb#0:ob#0:\ :pc#1760:oc#0: floppyhd|floppy3hd|3inhd|Amiga 3.5in High Density Floppy:\ :ty=floppy:se#512:nt#2:rm#300:ns#22:nc#80:\ :ts=3500:\ :pa#3520:oa#0:ba#4096:fa#512:\ :pb#0:ob#0:\ :pc#3520:oc#0: miniroot:\ :ty=winchester:se#512:nt#2:rm#300:ns#64:nc#80:\ :ts=3500:\ :pa#10240:oa#0:ba#8192:fa#1024:ta=4.2BSD:\ :pb#0:ob#0:\ :pc#10240:oc#0: rdroot|ramdiskroot|RAM-disk root FS image:\ :ty=simulated:se#512:nc#16:nt#2:ns#128:\ :ta=4.2BSD:oa#0:pa#3584:fa#1024:ba#8192:\ :ob#0:pb#0:oc#0:pc#3584: