disktab(4)                                             disktab(4)



NAME
     disktab - disk description file format

SYNOPSIS
     #include <ufs/disktab.h>

DESCRIPTION
     disktab is a simple database that describes disk parameters
     that relate to various types of disks. The newfs command is
     normally entered along with a type argument that it uses to
     locate disk-specific information within disktab.

     The format of this file is patterned after the termcap(4)
     terminal database.  Entries in disktab consist of a number
     of colon-separated fields. Alternatively, lines starting
     with a number sign (#) can be composed of any comment text
     whatsoever:

        # comment-text


     The first field contains the names and any aliases that can
     be associated with a disk drive and supplied as one of the
     arguments for the newfs command.  Customarily, the last
     alias specified is a model number.  A vertical bar (|)
     precedes each alias name in accordance with the following
     syntax:

        type-name[|alias-name]...|model-number[:name-value-pair]...

     As shown, the remaining fields contain name-value pairs, in
     the appropriate format:

        name#numeric-value
        name=string-value


     The following numeric or string values can be specified:

     Name   Type     Assignable values
     ty     string   Winchester or floppy
     ns     number   sectors per track
     nt     number   tracks per cylinder
     nc     number   total number of cylinders
     rg     number   rotational gap in sectors
     se     number   sectors per track
     rm     number   revolutions per minute

     The names pa, pb, pc, pd, pe, pf, pg, and ph are normally
     assigned values corresponding to the partition sizes of up
     to eight disk partitions.  For A/UX, however, the Apple HD
     SC Setup program (or dp) should be used exclusively to



January 1992                                                    1

disktab(4)                                             disktab(4)



     establish disk partitions.

     Note that a floppy disk can only contain one partition.

FILES
     /etc/disktab
          Disk description file

SEE ALSO
     fs(4)

     newfs(1M) in A/UX System Administrator's Reference











































2                                                    January 1992