Identifying the disk offset for Solaris hosts

Determine the disk offset for Solaris hosts, if you have Solaris hosts.

Steps

1. On the host, enter the following command: prtvtoc /dev/rdsk/device_name

   Example

   The following output example shows the partition map for disk c3t9d1s2:

   prtvtoc /dev/rdsk/c3t9d1s2
   * /dev/rdsk/c3t9d1s2 partition map
   *
   * Dimensions:
   *     512 bytes/sector
   *     384 sectors/track
   *      16 tracks/cylinder
   *    6144 sectors/cylinder
   *    5462 cylinders
   *    5460 accessible cylinders
   *
   * Flags:
   *   1: unmountable
   *  10: read-only
   *
   *                          First     Sector    Last
   * Partition  Tag  Flags    Sector     Count    Sector  Mount Directory
          0      0    00          0      6144      6143
          2      5    01          0  33546240  33546239
          6      0    00       6144  33540096  33546239

   The host console displays a partition map for the disk.

2. Obtain the offset value by multiplying the value of the first sector of the partition you are using by the bytes/sector value listed under Dimensions.

   In the example shown in Step 1, which is using slice 6, the disk offset is 6144 * 512 = 3145728.