dvhtool - Disk volume header manipulation tool

dvhtool  was written by Ralf Baechle <ralf@oss.sgi.com>, Keith M. Wesolowski <wesolows@foobazco.org>, Tor
       Arntsen <tor@spacetec.no>, Guido Guenther <agx@debian.org>.

4th Berkeley Distribution                           July 2000                                         DVHTOOL(8)

dvhtool  is  a  utility  for  displaying  SGI disk partition and volume header information as well as for
       copying files to and from the volume header.

       It is similar to the IRIX(tm) utility of  the  same  name,  however  the  options  and  usage  are  quite
       different.  Also, the IRIX utility cannot display partition and boot file information.

       The  disk volume header includes the disk partition table and the volume directory.  The volume directory
       is an index to the files stored in the volume header part of the disk.  These files can be  anything  but
       are  usually standalone programs (like sash, the SGI standalone shell).  The space available for files is
       usually limited to one, two or a few megabytes, this can only be changed by repartitioning the disk  with
       fx, the SGI disk formatting and partitioning tool or fdisk.

       You must be root to invoke dvhtool.  The device name can be /dev/sda for the first disk, /dev/sdb for the
       second, and so on.

       dvhtool will also work on a file image of a disk volume header.

       OPTIONS -d,--devicedevicename Specify the volume header device name (or file image)

       --print-volume-header
              Show volume header data only

       --print-volume-directory
              Show volume table of contents

       --print-partitions
              Show partition data

       --print-all
              Equivalent to all three above options

       --vh-removename
              Remove volhdr file name.

       --vh-to-unixnamefile
              Copy volhdr file name to Unix file file--unix-to-vhfilename
              Copy Unix file file to volhdr as name--help Show usage information

       dvhtool - Disk volume header manipulation tool

fdisk(8)

       IRIX tools: fx(1M), prtvtoc(1M), vh(7M).

dvhtool--devicedevicename [ option ]

       dvhtool-ddevicename [ option ]