System Administration Guide: Devices and File Systems

ProcedureHow 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 10, Managing Disks (Overview).

  1. Become superuser or assume an equivalent role.

  2. Display the disk label information.


    # prtvtoc /dev/rdsk/device-name
    

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


Example 11–7 Examining a Disk Label

The following example shows disk label information for a 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 disk label information for a 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