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 partitions.

-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:

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

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:

See Also

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

Warnings

The mount command does not check the “not mountable” bit.