prtvtoc [-fhs] [-t vfstab] [-m mnttab] device
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.
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.
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
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Availability | SUNWcsu |
devinfo(1M), fmthard(1M), format(1M), mount(1M), attributes(5)
The mount command does not check the "not mountable" bit.