Example--Determining if a Disk Is Formatted
The following example shows that disk c0t3d0 is formatted.
# format
AVAILABLE DISK SELECTIONS:
0. c0t1d0 <SUN1.05 cyl 2036 alt 2 hd 14 sec 72>
/iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000/sd@1,0
1. c0t3d0 <SUN1.05 cyl 2036 alt 2 hd 14 sec 72>
/iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000/sd@3,0
Specify disk (enter its number): 0
selecting c0t1d0
[disk formatted]
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How to Format a Disk
Become superuser or assume an equivalent role.
Invoke the format utility.
# format
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 - Do not select the system disk. If you format your system disk,
you delete the operating system and any data on this disk.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
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--Formatting a Disk
The following example shows how to format the disk c0t3d0.
# format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c0t1d0 <SUN1.05 cyl 2036 alt 2 hd 14 sec 72>
/iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000/sd@1,0
1. c0t3d0 <SUN1.05 cyl 2036 alt 2 hd 14 sec 72>
/iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000/sd@3,0
Specify disk (enter its number):1
Selecting c0t3d0
[disk formatted]
format> format
Ready to format. Formatting cannot be interrupted
and takes 23 minutes (estimated). Continue? yes
Beginning format. The current time is Thu Dec 6 09:54:40 2001
Formatting ...
done
Verifying media...
pass 0 - pattern = 0xc6dec6de
2035/12/18
pass 1 - pattern = 0x6db6db6d
2035/12/18
Total of 0 defective blocks repaired.
format>
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Displaying Disk Slices
You can use the format utility to check whether a disk has the appropriate disk slices. If you determine that a disk does not contain the slices you want to use, use the format utility to re-create them and label the disk. For information on creating disk slices, see "SPARC: How to Create Disk Slices and Label a Disk" or "IA: How to Create Disk Slices and Label a Disk".
Note - The format utility uses the term partition instead of slice.
How to Display Disk Slice Information
Become superuser or assume an equivalent role.
Invoke the format utility.
# format
Type the number of the disk for which you want to display slice information from the list displayed on your screen.
Specify disk (enter its number):1
Select the partition menu.
format> partition
Display the slice information for the current disk drive.
partition> print
Exit the format utility.
partition> q format> q #
Verify the displayed slice information by identifying specific slice tags and slices.
If the screen output shows that no slice sizes are assigned, the disk probably does not have slices.
Examples--Displaying Disk Slice Information
The following example displays slice information for disk /dev/dsk/c0t3d0.
# format Searching for disks...done Specify disk (enter its number):1 Selecting c0t3d0 format> partition partition> print Current partition table (original): Total disk cylinders available: 2036 + 2 (reserved cylinders) Part Tag Flag Cylinders Size Blocks 0 root wm 0 - 300 148.15MB (301/0/0) 303408 1 swap wu 301 - 524 110.25MB (224/0/0) 225792 2 backup wm 0 - 2035 1002.09MB (2036/0/0) 2052288 3 unassigned wm 0 0 (0/0/0) 0 4 unassigned wm 0 0 (0/0/0) 0 5 unassigned wm 0 0 (0/0/0) 0 6 usr wm 525 - 2035 743.70MB (1511/0/0) 1523088 7 unassigned wm 0 0 (0/0/0) 0 partition> q format> q # |
For a detailed description of the slice information in these examples, see Chapter 31, Managing Disks (Overview).
The following example shows the slice information on disk /dev/dsk/c0t0d0.
# format Searching for disks...done Specify disk (enter its number): 0 selecting c0t0d0 [disk formatted] format> partition partition> print Current partition table (original): Total disk cylinders available: 817 + 2 (reserved cylinders) Part Tag Flag Cylinders Size Blocks 0 unassigned wm 3 - 816 6.26GB (814/0/0) 13128192 1 unassigned wm 0 0 (0/0/0) 0 2 backup wm 0 - 816 6.28GB (817/0/0) 13176576 3 unassigned wm 0 0 (0/0/0) 0 4 unassigned wm 0 0 (0/0/0) 0 5 unassigned wm 0 0 (0/0/0) 0 6 unassigned wm 0 0 (0/0/0) 0 7 unassigned wm 0 0 (0/0/0) 0 8 boot wu 0 - 0 7.88MB (1/0/0) 16128 9 alternates wu 1 - 2 15.75MB (2/0/0) 32256 partition> q format> q |