prtvtoc– report information about a disk geometry and partitioning

Name

prtvtoc– report information about a disk geometry and partitioning

Synopsis

prtvtoc [-fhs] [-t vfstab] [-m mnttab] device

Description

The prtvtoc command allows the contents of the label to be viewed. The command can be used only by the super-user.

The device name can be the file name of a raw device in the form of /dev/rdsk/c?t?d?s2 or can be the file name of a block device in the form of /dev/dsk/c?t?d?s2.

Options

The following options are supported:

-f

Report on the disk free space, including the starting block address of the free space, number of blocks, and unused partitions.

-h

Omit the headers from the normal output.

-m mnttab

Use mnttab as the list of mounted filesystems, in place of /etc/mnttab.

-s

Omit all headers but the column header from the normal output.

-t vfstab

Use vfstab as the list of filesystem defaults, in place of /etc/vfstab.

Examples

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Example 1 Using the prtvtoc Command




The following example uses the prtvtoc command on a 424-megabyte hard disk:

example# prtvtoc /dev/rdsk/c0t3d0s2 * /dev/rdsk/c0t3d0s2 partition map * * Dimension: * 512 bytes/sector * 80 sectors/track * 9 tracks/cylinder * 720 sectors/cylinder * 2500 cylinders * 1151 accessible cylinders * * Flags: * 1: unmountable * 10: read-only * * First Sector Last * Partition Tag Flags Sector Count Sector Mount Directory 0 2 00 0 76320 76319 / 1 3 01 76320 132480 208799 2 5 00 0 828720 828719 5 6 00 208800 131760 340559 /opt 6 4 00 340560 447120 787679 /usr 7 8 00 787680 41040 828719 /export/home example#

The data in the Tag column above indicates the type of partition, as follows:

Name	Number
UNASSIGNED	0x00
BOOT	0x01
ROOT	0x02
SWAP	0x03
USR	0x04
BACKUP	0x05
STAND	0x06
VAR	0x07
HOME	0x08
ALTSCTR	0x09
CACHE	0x0a
RESERVED	0x0b

The data in the Flags column above indicates how the partition is to be mounted, as follows:

Name	Number
MOUNTABLE, READ AND WRITE	0x00
NOT MOUNTABLE	0x01
MOUNTABLE, READ ONLY	0x10

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Example 2 Using the prtvtoc Command with the -f Option




The following example uses the prtvtoc command with the -f option on a 424-megabyte hard disk:

example# prtvtoc -f /dev/rdsk/c0t3d0s2 FREE_START=0 FREE_SIZE=0 FREE_COUNT=0 FREE_PART=34

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Example 3 Using the prtvtoc Command on a Disk Over One Terabyte




The following example uses uses the prtvtoc command on a disk over one terabyte:.

example# prtvtoc /dev/rdsk/c1t1d0s2 * /dev/rdsk/c1t1d0s2 partition map * * Dimensions: * 512 bytes/sector * 3187630080 sectors * 3187630013 accessible sectors * * Flags: * 1: unmountable * 10: read-only * * First Sector Last * Partition Tag Flags Sector Count Sector Mount Directory 0 2 00 34 262144 262177 1 3 01 262178 262144 524321 6 4 00 524322 3187089340 3187613661 8 11 00 3187613662 16384 318763004

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Attributes

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Availability	SUNWcsu

See Also

devinfo(1M), fmthard(1M), format(1M), mount(1M), attributes(5)

Warnings

The mount command does not check the "not mountable" bit.