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prtvtoc(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 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.

OPTIONS
       The following options are supported:

       -f    Report on the disk	free space, including the starting  block  ad-
	     dress of the free space, number of	blocks,	and unused partitions.

       -h    Omit the headers from the normal output.

       -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.

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

EXAMPLES
       Example 1: The prtvtoc command.

       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:

       Name			   Number
       UNASSIGNED		   0x00
       BOOT			   0x01

       ROOT			   0x02
       SWAP			   0x03
       USR			   0x04
       BACKUP			   0x05
       STAND			   0x06
       VAR			   0x07
       HOME			   0x08
       ALTSCTR			    0x09
       CACHE			   0x0a

       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: Output for the  -f option.

       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

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.

SunOS 5.9			  12 Sep 1997			   prtvtoc(1M)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | ATTRIBUTES | SEE ALSO | WARNINGS

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