The prtvtoc command allows the contents of the VTOC (volume table of contents) 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:
Report on the disk free space, including the starting block address of the free space, number of blocks, and unused partitions.
Omit the headers from the normal output.
Omit all headers but the column header from the normal output.
Use vfstab as the list of filesystem defaults, in place of /etc/vfstab.
Use mnttab as the list of mounted filesystems, in place of /etc/mnttab.
The command line entry and system response shown below are for 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 *
The data in the Tag column above indicates the type of partition, as follows:
The data in the Flags column above indicates how the partition is to be mounted, as follows:
|MOUNTABLE, READ AND WRITE||0x00|
|MOUNTABLE, READ ONLY||0x10|
The following example shows output for the -f option for the same disk as above.
example# prtvtoc -f /dev/rdsk/c0t3d0s2 FREE_START=0 FREE_SIZE=0 FREE_COUNT=0 FREE_PART=34
See attributes(5) for descriptions of the following attributes:
|ATTRIBUTE TYPE||ATTRIBUTE VALUE|
The mount command does not check the "not mountable" bit.