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System Administration Guide: Devices and File Systems

ProcedureHow to Create a Solaris Partition and Modify the Slices on a USB Mass Storage Device Without vold Running

The following steps illustrate how to create a Solaris partition and modify the slices with removable media services disabled.

Make sure you back up any data before you perform this task.

  1. Become superuser.

  2. For information on disabling removable media services, see How to Disable or Enable Removable Media Services.

  3. Start the fdisk utility.

    For example:


    # fdisk /dev/rdsk/c5t0d0s2
No fdisk table exists. The default partition for the disk is:

  a 100% "SOLARIS System" partition

Type "y" to accept the default partition,  otherwise type "n" to edit the
 partition table.
y

  4. Display the current slices.

    For example:


    # prtvtoc /dev/rdsk/c5t0d0s2
* /dev/rdsk/c5t0d0s2 partition map
*
* Dimensions:
*     512 bytes/sector
*      63 sectors/track
*     255 tracks/cylinder
*   16065 sectors/cylinder
*    5836 cylinders
*    5836 accessible cylinders
*
* Flags:
*   1: unmountable
*  10: read-only
*
*                          First     Sector    Last
* Partition  Tag  Flags    Sector     Count    Sector  Mount Directory
       0      0    00          0  93755340  93755339
       2      0    00          0  93755340  93755339

  5. Create a text file with the slice information.

    For example:


    slices: 0 = 0, 5GB, "wm", "home" :
        1 = 8225280000, 6GB :
        2 = 0, 44GB, "wm", "backup" :
        6 = 16450560000, 15GB

    Make sure each slice starts on a cylinder boundary. For example, slice 1 starts at 822280000 bytes, which is the cylinder size in bytes multiplied by 1000.

    For more information, see the -s option description in rmformat(1).

  6. Create the slices by including the slice file created above.

    For example:


    # rmformat -s slice_file /dev/rdsk/c5t0d0s2

  7. View the new slice information.

    For example:


    # prtvtoc /dev/rdsk/c5t0d0s2
* /dev/rdsk/c5t0d0s2 partition map
*
* Dimensions:
*     512 bytes/sector
*      63 sectors/track
*     255 tracks/cylinder
*   16065 sectors/cylinder
*    5836 cylinders
*    5836 accessible cylinders
*
* Flags:
*   1: unmountable
*  10: read-only
*
* Unallocated space:
*       First     Sector    Last
*       Sector     Count    Sector
*    10485760   5579240  16064999
*    28647912   3482088  32129999
*    63587280  30168060  93755339
*
*                          First     Sector    Last
* Partition  Tag  Flags    Sector     Count    Sector  Mount Directory
       0      8    00          0  10485760  10485759
       1      3    01   16065000  12582912  28647911
       2      5    00          0  92274688  92274687
       6      4    00   32130000  31457280  63587279