System Administration Commands prtvtoc(1M)
NAME
prtvtoc - report information about a disk geometry and par-
titioning
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:
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System Administration Commands prtvtoc(1M)
* 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 par-
tition, as follows:
Name Number
UNASIGNED 0x00
BOT 0x01
ROT 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 parti-
tion is to be mounted, as follows:
Name Number
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System Administration Commands prtvtoc(1M)
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
FRESTART=0 FRESIZE=0 FRECOUNT=0 FREPART=34
Example 3 Using the prtvtoc Command on a Disk Over One Tera-
byte
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
ATRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
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System Administration Commands prtvtoc(1M)
ATRIBUTE TYPE ATRIBUTE VALUE
Availability SUNWcsu
SEE ALSO
devinfo(1M), fmthard(1M), format(1M), mount(1M), attri-
butes(5)
WARNINGS
The mount command does not check the "not mountable" bit.
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