prtvtoc(1M)prtvtoc(1M)NAMEprtvtoc - print disk volume header information
SYNOPSIS
/etc/prtvtoc [[-aefhms] [-t fstab]] [rawdiskname]
DESCRIPTIONprtvtoc prints a summary of the information in the volume header for a
single disk or all of the local disks attached to a system (see vh(7M)).
The command is usually used only by the superuser.
The rawdiskname name should be the raw device filename of a disk volume
header in the form /dev/rdsk/dks?d?vh.
Note: prtvtoc knows about the special file directory naming conventions,
so the /dev/rdsk prefix can be omitted.
If no name is given, the information for the root disk is printed.
In single disk mode, prtvtoc prints information about the disk geometry
(number of cylinders, heads, and so on), followed by information about
the partitions. For each partition, the type is indicated (for example,
filesystem, raw data, and so on). Cylinders can be non-integral values,
as they may not correspond to actual physical values, for some drive
types. For filesystem partitions, prtvtoc shows if there is actually a
filesystem on the partition, and if it is mounted, the mount point is
shown. Mount points shown in square brackets indicate the mount point of
the logical volume the partition belongs to.
The following options to prtvtoc can be used:
-s Print only the partition table, with headings but without the
comments.
-h Print only the partition table, without headings and comments.
Use this option when the output of the prtvtoc command is
piped into another command.
-t fstab Use the file fstab instead of /etc/fstab. This option is now
ignored, as the file /etc/mtab is always used to find mount
points.
The following options create summaries from all disk volume headers:
-a Show abbreviated partition listings for all disks attached to
the system.
-m List all partitions in use by local filesystems. The listing
includes partitions that belong to logical volumes.
Page 1
prtvtoc(1M)prtvtoc(1M)-e Extended listing. This combines the -a and -m options as well
as reporting unallocated (free) partitions, and overlapping
mounted partitions.
EXAMPLE
The output below is for a SCSI system (root) disk obtained by invoking
prtvtoc without parameters. A change from earlier releases is that we no
longer treat disk drives as though they were of fixed geometry (most SCSI
disks no longer have fixed geometry), synthesizing a geometry that made
the capacity work. Now they are simply treated as a stream of blocks, so
there is no longer any information about cylinders and other drive
geometry, just partition information.
Printing label for root disk
* /dev/root (bootfile "/unix")
* 512 bytes/sector
Partition Type Fs Start: sec Size: sec Mount Directory
0 efs yes 4608 4108800
1 raw 4113408 81408
8 volhdr 0 4608
10 volume 0 4194816
This next output is for a SCSI option disk obtained by invoking prtvtoc
with drive dks0d2vh as the parameter.
* /dev/rdsk/dks0d2vh (bootfile "/unix")
* 512 bytes/sector
Partition Type Fs Start: sec Size: sec Mount Directory
7 xfs yes 4560 8684310 /usr/people
8 volhdr 0 4560
10 volume 0 8688870
SEE ALSOdvhtool(1M), fx(1M), dks(7M), vh(7M).
Page 2
