SPARC: How to Create Disk Slices and
Label a Disk
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Become superuser or assume an equivalent role.
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# format
A numbered list of available disks is displayed. For more information, see format(1M).
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Type the number of the disk that you want to repartition.
Specify disk (enter its number): disk-number
disk-number is the number of the disk that you want to repartition.
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Select the partition menu.
format> partition
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Display the current partition (slice) table.
partition> print
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Start the modification process.
partition> modify
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Set the disk to all free hog.
Choose base (enter number) [0]?1
For more information about the free hog slice, see Using the Free Hog Slice.
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Create a new partition table by answering y when prompted to continue.
Do you wish to continue creating a new partition table based on above table[yes]? y
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Identify the free hog partition (slice) and the sizes of the slices when prompted.
When adding a system disk, you must set up slices for:
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root (slice 0) and swap (slice 1)
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/usr (slice 6)
After you identify the slices, the new partition table is displayed.
For an example of creating disk slices, see Example 12–1.
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Make the displayed partition table the current partition table by answering y when prompted.
Okay to make this the current partition table[yes]? y
If you do not want the current partition table and you want to change it, answer no and go to Step 6.
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Name the partition table.
Enter table name (remember quotes): "partition-name"
where partition-name is the name for the new partition table.
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Label the disk with the new partition table after you have finished allocating slices on the new disk.
Ready to label disk, continue? yes
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Quit the partition menu.
partition> q
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Verify the disk label.
format> verify
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Exit the format utility.
format> q
Example 12–1 SPARC: Creating Disk Slices and Labeling a System Disk
The following example shows the format utility being used to divide a 18-Gbyte disk into three slices: one slice for the root (/) file system, one slice for the swap area, and one slice for the /usr file system.
# format
AVAILABLE DISK SELECTIONS:
0. /dev/rdsk/c1t0d0s0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
/sbus@2,0/QLGC,isp@2,10000/sd@0,0
1. /dev/rdsk/c1t1d0s0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
/sbus@2,0/QLGC,isp@2,10000/sd@1,0
2. /dev/rdsk/c1t8d0s0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
/sbus@2,0/QLGC,isp@2,10000/sd@8,0
3. /dev/rdsk/c1t9d0s0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
/sbus@2,0/QLGC,isp@2,10000/sd@9,0
Specify disk (enter its number): 0
selecting c1t0d0
[disk formatted]
format> partition
partition> print
partition> modify
Select partitioning base:
0. Current partition table (original)
1. All Free Hog
Part Tag Flag Cylinders Size Blocks
0 root wm 0 0 (0/0/0) 0
1 swap wu 0 0 (0/0/0) 0
2 backup wu 0 - 7505 16.86GB (7506/0/0) 35368272
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 0 0 (0/0/0) 0
7 unassigned wm 0 0 (0/0/0) 0
Choose base (enter number) [0]? 1
table based on above table[yes]? yes
Free Hog partition[6]? 6
Enter size of partition '0' [0b, 0c, 0.00mb, 0.00gb]: 4gb
Enter size of partition '1' [0b, 0c, 0.00mb, 0.00gb]: 4gb
Enter size of partition '3' [0b, 0c, 0.00mb, 0.00gb]:
Enter size of partition '4' [0b, 0c, 0.00mb, 0.00gb]:
Enter size of partition '5' [0b, 0c, 0.00mb, 0.00gb]:
Enter size of partition '7' [0b, 0c, 0.00mb, 0.00gb]:
Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 1780 4.00GB (1781/0/0) 8392072
1 swap wu 1781 - 3561 4.00GB (1781/0/0) 8392072
2 backup wu 0 - 7505 16.86GB (7506/0/0) 35368272
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 3562 - 7505 8.86GB (3944/0/0) 18584128
7 unassigned wm 0 0 (0/0/0) 0
Okay to make this the current partition table[yes]? yes
Enter table name (remember quotes): "disk0"
Ready to label disk, continue? yes
partition> quit
format> verify
format> quit
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Example 12–2 SPARC: Creating Disk Slices and Labeling a Secondary Disk
The following example shows the format utility being used to divide a 18-Gbyte disk into one slice for the /export/home file system.
# format /dev/rdsk/c1*
AVAILABLE DISK SELECTIONS:
0. /dev/rdsk/c1t0d0s0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
/sbus@2,0/QLGC,isp@2,10000/sd@0,0
1. /dev/rdsk/c1t1d0s0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
/sbus@2,0/QLGC,isp@2,10000/sd@1,0
2. /dev/rdsk/c1t8d0s0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
/sbus@2,0/QLGC,isp@2,10000/sd@8,0
3. /dev/rdsk/c1t9d0s0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
/sbus@2,0/QLGC,isp@2,10000/sd@9,0
Specify disk (enter its number): 1
selecting c1t1d0
[disk formatted]
format> partition
partition> print
partition> modify
Select partitioning base:
0. Current partition table (original)
1. All Free Hog
Choose base (enter number) [0]? 1
Part Tag Flag Cylinders Size Blocks
0 root wm 0 0 (0/0/0) 0
1 swap wu 0 0 (0/0/0) 0
2 backup wu 0 - 7505 16.86GB (7506/0/0) 35368272
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 0 0 (0/0/0) 0
7 unassigned wm 0 0 (0/0/0) 0
Do you wish to continue creating a new partition
table based on above table[yes]? y
Free Hog partition[6]? 7
Enter size of partition '0' [0b, 0c, 0.00mb, 0.00gb]:
Enter size of partition '1' [0b, 0c, 0.00mb, 0.00gb]:
Enter size of partition '3' [0b, 0c, 0.00mb, 0.00gb]:
Enter size of partition '4' [0b, 0c, 0.00mb, 0.00gb]:
Enter size of partition '5' [0b, 0c, 0.00mb, 0.00gb]:
Enter size of partition '6' [0b, 0c, 0.00mb, 0.00gb]:
Part Tag Flag Cylinders Size Blocks
0 root wm 0 0 (0/0/0) 0
1 swap wu 0 0 (0/0/0) 0
2 backup wu 0 - 7505 16.86GB (7506/0/0) 35368272
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 0 0 (0/0/0) 0
7 unassigned wm 0 - 7505 16.86GB (7506/0/0) 35368272
Okay to make this the current partition table[yes]? yes
Enter table name (remember quotes): "home"
Ready to label disk, continue? y
partition> q
format> verify
format> q
#
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The following example shows how to use the format utility to divide a 1.15 terabyte disk with an EFI label into three slices.
# format
.
.
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partition> modify
Select partitioning base:
0. Current partition table (original)
1. All Free Hog
Choose base (enter number) [0]? 1
Part Tag Flag First Sector Size Last Sector
0 root wm 0 0 0
1 usr wm 0 0 0
2 unassigned wm 0 0 0
3 unassigned wm 0 0 0
4 unassigned wm 0 0 0
5 unassigned wm 0 0 0
6 usr wm 0 0 0
8 reserved wm 2576924638 8.00MB 2576941021
Do you wish to continue creating a new partition
table based on above table[yes]? y
Free Hog partition[6]? 4
Enter size of partition 0 [0b, 34e, 0mb, 0gb, 0tb]:
Enter size of partition 1 [0b, 34e, 0mb, 0gb, 0tb]:
Enter size of partition 2 [0b, 34e, 0mb, 0gb, 0tb]: 400gb
Enter size of partition 3 [0b, 838860834e, 0mb, 0gb, 0tb]: 400gb
Enter size of partition 5 [0b, 1677721634e, 0mb, 0gb, 0tb]:
Enter size of partition 6 [0b, 1677721634e, 0mb, 0gb, 0tb]:
Part Tag Flag First Sector Size Last Sector
0 unassigned wm 0 0 0
1 unassigned wm 0 0 0
2 usr wm 34 400.00GB 838860833
3 usr wm 838860834 400.00GB 1677721633
4 usr wm 1677721634 428.77GB 2576924637
5 unassigned wm 0 0 0
6 unassigned wm 0 0 0
8 reserved wm 2576924638 8.00MB 2576941021
Ready to label disk, continue? yes
partition> q
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After You Create Disk Slices and Label a Disk ...
After you create disk slices and label the disk, you can create file systems on the disk. Go to SPARC: How to Create a UFS File System.
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