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System Administration Guide: Devices and File Systems

ProcedureHow to Format a Disk

Steps

  1. Become superuser or assume an equivalent role.

  2. Invoke the format utility.


    # format

  3. Type the number of the disk that you want to format from the list displayed on your screen.


    Specify disk (enter its number): 0
    Caution – Caution –

    Do not select the system disk. If you format your system disk, you delete the operating system and any data on this disk.

  4. To begin formatting the disk, type format at the format> prompt. Confirm the command by typing y.


    format> format
Ready to format.  Formatting cannot be interrupted
and takes 23 minutes (estimated). Continue? yes

  5. Verify that the disk format is successful by noting the following messages.


    Beginning format. The current time Tue ABC xx xx:xx:xx xxxx

Formatting...
done

Verifying media...
        pass 0 - pattern = 0xc6dec6de
   2035/12/18  

        pass 1 - pattern = 0x6db6db6d
   2035/12/18  

Total of 0 defective blocks repaired.
Example 11–3 Formatting a Disk

The following example shows how to format the disk c0t3d0. 


# format
Searching for disks...done


AVAILABLE DISK SELECTIONS:
       0. c0t0d0 <SUNW18G cyl 7506 alt 2 hd 19 sec 248
          /pci@1f,0/pci@1,1/scsi@2/sd@0,0
       1. c0t1d0 <FUJITSU  MAN3367M SUN36G  1804 43d671f>
          /pci@1f,0/pci@1,1/scsi@2/sd@1,0
       2. c0t2d0 <FUJITSU  MAN3367M SUN36G  1804 43d671f>
          /pci@1f,0/pci@1,1/scsi@2/sd@2,0
       3. c0t3d0 <FUJITSU  MAN3367M SUN36G  1804 43d671f>
          /pci@1f,0/pci@1,1/scsi@2/sd@3,0
       4. c0t4d0 <FUJITSU  MAN3367M SUN36G  1804 43d671f>
          /pci@1f,0/pci@1,1/scsi@2/sd@4,0
       5. c0t5d0 <FUJITSU  MAN3367M SUN36G  1804 43d671f>
          /pci@1f,0/pci@1,1/scsi@2/sd@5,0
       6. c0t6d0 <FUJITSU  MAN3367M SUN36G  1804 43d671f>
          /pci@1f,0/pci@1,1/scsi@2/sd@6,0
Specify disk (enter its number): 6
selecting c0t6d0
[disk formatted]
format> format
Ready to format.  Formatting cannot be interrupted
and takes 332 minutes (estimated). Continue? y
Beginning format. The current time is Wed Jan  7 16:16:05 2004

Formatting...
   99% complete (00:00:21 remaining) done

Verifying media...
        pass 0 - pattern = 0xc6dec6de
   71132922  

        pass 1 - pattern = 0x6db6db6d
   71132922  

Total of 0 defective blocks repaired.
format> quit