prtvtoc(1M) (man pages section 1M: System Administration Commands)

man pages section 1M: System Administration Commands

prtvtoc(1M)

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

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

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

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

ATTRIBUTES

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

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Availability	SUNWcsu

WARNINGS

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

SunOS 5.9 Last Revised 25 Jul 2002