11.1Snonaka# $NetBSD: disktab.preinstall,v 1.1 2010/04/06 15:54:31 nonaka Exp $ 21.1Snonaka# 31.1Snonaka# Disk geometry and partition layout tables. 41.1Snonaka# Key: 51.1Snonaka# dt controller type 61.1Snonaka# ty type of disk (fixed, removable, simulated) 71.1Snonaka# d[0-4] drive-type-dependent parameters 81.1Snonaka# ns #sectors/track 91.1Snonaka# nt #tracks/cylinder 101.1Snonaka# nc #cylinders/disk 111.1Snonaka# sc #sectors/cylinder, nc*nt default 121.1Snonaka# su #sectors/unit, sc*nc default 131.1Snonaka# se sector size, DEV_BSIZE default 141.1Snonaka# rm rpm, 3600 default 151.1Snonaka# sf supports bad144-style bad sector forwarding 161.1Snonaka# sk sector skew per track, default 0 171.1Snonaka# cs sector skew per cylinder, default 0 181.1Snonaka# hs headswitch time, default 0 191.1Snonaka# ts one-cylinder seek time, default 0 201.1Snonaka# il sector interleave (n:1), 1 default 211.1Snonaka# bs boot block size, default BBSIZE 221.1Snonaka# sb superblock size, default SBSIZE 231.1Snonaka# o[a-h] partition offsets in sectors 241.1Snonaka# p[a-h] partition sizes in sectors 251.1Snonaka# b[a-h] partition block sizes in bytes 261.1Snonaka# f[a-h] partition fragment sizes in bytes 271.1Snonaka# t[a-h] partition types (filesystem, swap, etc) 281.1Snonaka# 291.1Snonaka# All partition sizes reserve space for bad sector tables. 301.1Snonaka# (5 cylinders needed for maintenance + replacement sectors) 311.1Snonaka# 32