ptab(4)                                                   ptab(4)



     NAME
          ptab - partition table file

     SYNOPSIS
          /etc/ptab

     DESCRIPTION
          The ptab file contains information regarding the known par-
          titions 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 recom-
          mended.

          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 contain-
                    ing this partition.

          disk      This is the disk number (for the specified con-
                    troller) of the disk containing this partition.

          slice     This is the slice (partition) number of the parti-
                    tion.

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



     April, 1990                                                     1

     ptab(4)                                                   ptab(4)



     FILES
          /etc/ptab

     SEE ALSO
          dp(1M), pname(1M), getptabent(3).

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

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










































     2                                                     April, 1990