ptab(4)                                                   ptab(4)



NAME
     ptab - partition table file

SYNOPSIS
     /etc/ptab

DESCRIPTION
     The ptab file contains information regarding the known
     partitions present on the local machine.  It is read and/or
     modified by the pname(1M) utility.  The system administrator
     can modify it with a text editor, though this is not
     recommended.

     For each partition a single line should be present with the
     following information:

     name Name of the partition - must not be greater than 32
          characters long.

     type Type of the partition - must not be greater than 32
          characters long.  If this field is left empty, the
          default type Apple_UNIX_SVR2 will be assumed.

     controller
          This is the controller number of the disk containing
          this partition.

     disk This is the disk number (for the specified controller)
          of the disk containing this partition.

     slice
          This is the slice (partition) number of the partition.

     comment
          All additional information at the end of the line is
          treated as a comment.

     The partition table file is an ASCII file.  Fields within an
     entry are separated from each other by colons.  Each entry
     is separated from the next by a newline.  Entries are
     separated by newlines.  The ptab file can also have a line
     beginning with the sharp character (#), which means that
     this line should be treated as a comment and ignored.

EXAMPLES
     Here is a sample /etc/ptab file:

        #name:type:controller:disk:slice[:comment]
        #root::0:0:0:assigned by default
        #swap::0:0:1:assigned by default
        src::0:0:3
        users::1:0:0:on extra disk



January 1992                                                    1

ptab(4)                                                   ptab(4)



        Macintosh:Apple_HFS:0:0:13:Mac partition


WARNINGS
     Appropriate precautions must be taken to lock the /etc/ptab
     file against simultaneous modifications.

LIMITATIONS
     The current revision of the software will not support colons
     (:) in partition names or partition types.

FILES
     /etc/ptab
          File containing partition table

SEE ALSO
     getptabent(3)

     dp(1M), pname(1M) in A/UX System Administrator's Reference




































2                                                    January 1992