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System Administration Guide: Basic Administration

How to Examine a Disk Label

Examine disk label information by using the prtvtoc command. For a detailed description of the disk label and the information that is displayed by the prtvtoc command, see Chapter 32, Managing Disks (Overview).

  1. Become superuser or assume an equivalent role.

  2. Display the disk label information. 


    # prtvtoc /dev/rdsk/device-name

    device-name is the raw disk device you want to examine.

Examples—Examining a Disk Label

The following example shows the disk label information for disk with a VTOC label. 


# prtvtoc /dev/rdsk/c0t0d0s0
* /dev/rdsk/c0t0d0s0 partition map
*
* Dimensions:
*     512 bytes/sector
*      63 sectors/track
*      15 tracks/cylinder
*     945 sectors/cylinder
*    8894 cylinders
*    8892 accessible cylinders
*
* Flags:
*   1: unmountable
*  10: read-only
*
*                          First     Sector    Last
* Partition  Tag  Flags    Sector     Count    Sector  Mount Directory
       0      2    00    1048950   3381210   4430159   /
       1      3    01          0   1048950   1048949
       2      5    00          0   8402940   8402939
       7      8    00    4430160   3972780   8402939   /export/home

The following example shows the disk label information for disk with an EFI label.


# prtvtoc /dev/rdsk/c3t1d0s0
* /dev/rdsk/c3t1d0s0 partition map
*
* Dimensions:
*     512 bytes/sector
* 2479267840 sectors
* 2479267773 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 2478727100 2479251421
       8     11    00  2479251422     16384 2479267805