Maintenance Commands                                  prtvtoc(1M)

NAME
     prtvtoc - report information about a disk geometry and  par-
     titioning

SYNOPSIS
     prtvtoc [ -fhs ]  [ -t vfstab ]  [ -m mnttab ]  device

DESCRIPTION
     The prtvtoc command allows the contents of the VTOC  (volume
     table  of  contents)  to  be viewed. The command can be used
     only by the super-user.

     The device name can be the file name of a raw device in  the
     form  of  /dev/rdsk/c?t?d?s2  or  can  be the file name of a
     block device in the form of /dev/dsk/c?t?d?s2.

OPTIONS
     The following options are supported:

     -f    Report on the disk free space, including the  starting
           block address of the free space, number of blocks, and
           unused partitions.

     -h    Omit the headers from the normal output.

     -s    Omit all headers but the column header from the normal
           output.

     -t vfstab
           Use vfstab as the  list  of  filesystem  defaults,  in
           place of /etc/vfstab.

     -m mnttab
           Use mnttab as the  list  of  mounted  filesystems,  in
           place of /etc/mnttab.

EXAMPLES
     Example 1: The prtvtoc command.

     The command line entry and system response shown  below  are
     for a 424-megabyte hard disk:

     example# prtvtoc /dev/rdsk/c0t3d0s2
     * /dev/rdsk/c0t3d0s2  partition map
     *
     * Dimension:
     *     512 bytes/sector
     *      80 sectors/track
     *       9 tracks/cylinder
     *     720 sectors/cylinder
     *    2500 cylinders
     *    1151 accessible cylinders

SunOS 5.8           Last change: 12 Sep 1997                    1

Maintenance Commands                                  prtvtoc(1M)

     *
     * Flags:
     *   1: unmountable
     *  10: read-only
     *

     The data in the Tag column above indicates the type of  par-
     tition, as follows:

     Name                        Number
     UNASSIGNED                  0x00
     BOOT                        0x01
     ROOT                        0x02
     SWAP                        0x03
     USR                         0x04
     BACKUP                      0x05
     STAND                       0x06
     VAR                         0x07
     HOME                        0x08
     ALTSCTR                      0x09
     CACHE                       0x0a

     The data in the Flags column above indicates how the  parti-
     tion is to be mounted, as follows:

     Name                        Number
     MOUNTABLE, READ AND WRITE   0x00
     NOT MOUNTABLE               0x01
     MOUNTABLE, READ ONLY        0x10

     Example 2: Output for the  -f option.

     The following example shows output for the   -f  option  for
     the same disk as above.

     example# prtvtoc -f /dev/rdsk/c0t3d0s2
     FREE_START=0 FREE_SIZE=0 FREE_COUNT=0 FREE_PART=34

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | SUNWcsu                     |
    |_____________________________|_____________________________|

SunOS 5.8           Last change: 12 Sep 1997                    2

Maintenance Commands                                  prtvtoc(1M)

SEE ALSO
     devinfo(1M),  fmthard(1M),  format(1M),  mount(1M),   attributes(5)
     

WARNINGS
     The mount command does not check the "not mountable" bit.

SunOS 5.8           Last change: 12 Sep 1997                    3