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LEARN ABOUT LINUX

prtvtoc

prtvtoc(1M)                                               System Administration Commands                                               prtvtoc(1M)

NAME

       prtvtoc - report information about a disk geometry and partitioning

SYNOPSIS

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

DESCRIPTION

       The prtvtoc command allows the contents of the label 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  parti-
                       tions.

       -h              Omit the headers from the normal output.

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

       -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.

EXAMPLES

       Example 1: Using the prtvtoc Command

       The following example uses the prtvtoc command on 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
       *
       * Flags:
       *   1: unmountable
       *  10: read-only
       * *                           First    Sector   Last
       * Partition   Tag   Flags   Sector   Count    Sector   Mount Directory
            0         2     00          0    76320    76319   /
            1         3     01      76320   132480   208799
            2         5     00          0   828720   828719
            5         6     00     208800   131760   340559   /opt
            6         4     00     340560   447120   787679   /usr
            7         8     00     787680    41040   828719   /export/home
       example#

       The data in the Tag column above indicates the type of partition, 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
       RESERVED                    0x0b

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

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

       Example 2: Using the prtvtoc Command with the -f Option

       The following example uses the prtvtoc command with the -f option on a 424-megabyte hard disk:

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

       Example 3: Using the prtvtoc Command on a Disk Over One Terabyte

       The following example uses uses the prtvtoc command on a disk over one terabyte:.

       example# prtvtoc /dev/rdsk/c1t1d0s2
       * /dev/rdsk/c1t1d0s2 partition map
       *
       * Dimensions:
       *     512 bytes/sector
       * 3187630080 sectors
       * 3187630013 accessible sectors
       *
       * Flags:
       *   1: unmountable
       *  10: read-only
       *
       *                          First     Sector    Last
       * Partition  Tag  Flags    Sector     Count    Sector  Mount Directory
       0      2    00         34    262144    262177
       1      3    01     262178    262144    524321
       6      4    00     524322 3187089340 3187613661
       8     11    00  3187613662     16384 318763004

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

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

WARNINGS

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

SunOS 5.10                                                          25 Jul 2002                                                        prtvtoc(1M)