# # Copyright (c) 1983,1986 Regents of the University of California. # All rights reserved. The Berkeley software License Agreement # specifies the terms and conditions for redistribution. # # @(#)disktab 4.11 (Berkeley) 5/31/86 # # Disk geometry and partition layout tables. # Key: # ty type of disk # ns #sectors/track -- DEV_BSIZE sectors # nt #tracks/cylinder # nc #cylinders/disk # rm rpm, 3600 default # ss sector size -- MUST ALWAYS BE DEV_BSIZE (1024) FOR SCSI and 512 FOR IDE DISKS FOR NOW # fp # DEV_BSIZE blocks in front porch # bp # DEV_BSIZE blocks in back porch # ng #alternate groups # gs #sectors per alt group # ga #alt sectors per group # ao sector offset to alternates in group # os name of boot file # z[0-1] location of "block 0" boot code in DEV_BSIZE blocks # hn hostname # ro read only root partition (e.g. 'a') # rw read/write partition (e.g. 'b') # p[a-h] partition base in DEV_BSIZE blocks # s[a-h] partition sizes in DEV_BSIZE blocks # b[a-h] partition block sizes in bytes # f[a-h] partition fragment sizes in bytes # c[a-h] partition cylinders-per-group # d[a-h] partition density (bytes-per-inode) # r[a-h] partition minfree # o[a-h] partition optimization ("space" or "time") # i[a-h] partition newfs during init # m[a-h] partition mount point name # a[a-h] partition auto-mount on insert # t[a-h] partition file system type ("4.3BSD", "sound" etc.) # # Entries may also be used for other compatible drives # with the same geometry. # # [Note that sum of partition sizes plus the SCSI front porch must # be <= total usable sectors; e.g., (2*4194304)+78271+320=8467199] # # Internal drives # omd-1|OMD-1|Canon OMD-1:\ :ty=removable_rw_optical:nc#1029:nt#15:ns#16:ss#1024:rm#3000:\ :fp#256:bp#256:ng#154:gs#1600:ga#16:ao#784:\ :os=sdmach:z0#80:z1#168:ro=a:\ :pa#0:sa#243936:ba#8192:fa#1024:ca#3:da#4096:ra#5:oa=time:\ :ia:ta=4.3BSD:aa: # # SCSI drives # # NOTE: The Builddisk application and /usr/etc/disk now are able to # automatically determine SCSI disk geometry and capacity for SCSI disks # that support the MODE SENSE command -- no disktab entry is required. # # Currently, these programs will build single and dual partition disks, so # disks requiring 3 or more partitions must still be specified in /etc/disktab. # # If an entry is specified in /etc/disktab it will be used in # preference to the default parameters chosen by /usr/etc/builddisk and # /usr/etc/disk. # #M1623TAT|FPJ@TPU|FPJ@TPU M1623TAT|Type 255-512|Fujitsu:\ # :ty=fixed_rw_ide:nc#3298:nt#16:ns#63:ss#512:rm#3600:\ # :fp#700:bp#120:ng#0:gs#0:ga#0:ao#0:\ # :os=sdmach:z0#2100000:z1#2100128:hn=pet:ro=a:rw=b:\ # :pa#2100000:sa#1220000:ba#8192:fa#1024:ca#16:da#4096:ra#10:oa=time:\ # :ia:ta=4.3BSD: # # the next is the 6.8GB Maxtor drive: Maxtor 90680D4|maxtor:\ :ty=fixed_rw_ide:ns#63:nt#16:nc#13176:rm#3600:ss#512:\ :fp#320:bp#0:ng#0:gs#0:ga#0:ao#0:\ :os=mach_kernel:z0#127:z1#255:hn=pet:\ :pa#63:sa#4892480:ba#8192:fa#1024:ca#16:da#4096:ra#2:oa=time:ia:ma=max1:ta=4.3BSD:\ :pb#4892544:sb#8388000:bb#8192:fb#1024:cb#16:db#4096:rb#2:ob=time:ib:mb=max2:tb=4.3BSD: # # the next is the 20.4GB IBM drive: IBM-DTLA-305020|ibm:\ :ty=fixed_rw_ide:ns#63:nt#16:nc#16383:rm#5400:ss#512:\ :fp#320:bp#0:ng#0:gs#0:ga#0:ao#0:\ :os=mach_kernel:z0#127:z1#255:hn=pet:ro=a:rw=b:\ :pa#63:sa#8249186:ba#8192:fa#1024:ca#16:da#4096:ra#2:oa=time:ia:ma=ibm1:ta=4.3BSD:\ :pb#8249249:sb#8248866:bb#8192:fb#1024:cb#16:db#4096:rb#2:ob=time:ib:mb=ibm2:tb=4.3BSD: # # the next is the 4GB Seagate Medalist drive (mounted on /data): # disk size: ns*nt*nc = 63*28*4763 = 8401932 sectors (each with 512 Bytes), this can be larger than 4GB, max. 8GB. # 8404830 sectors are useable according to the printed label on the drive # maximum size of a 4GB partition: 1024*1024*1024*4/512 = 8388608 sectors ST34321A|medalist:\ :ty=fixed_rw_ide:ns#63:nt#28:nc#4763:rm#3600:ss#512:\ :fp#320:bp#120:ng#0:gs#0:ga#0:ao#0:\ :os=mach_kernel:z0#127:z1#255:hn=pet:\ :pa#63:sa#8388608:ba#8192:fa#1024:ca#16:da#4096:ra#10:oa=space:ia:ma=data:ta=4.3BSD: #