|FMTHARD(8)||Maintenance Commands and Procedures||FMTHARD(8)|
fmthardcommand updates the VTOC (Volume Table of Contents) on hard disks. One or more of the options
-nvolume_name must be used to request modifications to the disk label. To print disk label contents, see prtvtoc(8). The /dev/rdsk/c? [t?]d?s2 file must be the character special file of the device where the new label is to be installed. On x86 systems, fdisk(8) must be run on the drive before
If you are using an x86 system, note that the term
‘partition’ in this page refers to slices
within the x86 fdisk partition on x86 machines. Do not
confuse the partitions created by
fmthard with the
partitions created by fdisk(8).
fmthardreads from standard input. The datafile format is described below. This option causes all of the disk partition timestamp fields to be set to zero.
Every VTOC generated by
fmthard will also have partition 2, by
convention, that corresponds to the whole disk. If the input in
datafile does not specify an entry for partition
2, a default partition 2 entry will be created automatically in
VTOC with the tag V_BACKUP and size
equal to the full size of the disk.
The datafile contains one specification line for each partition, starting with partition 0. Each line is delimited by a new-line character (\n). If the first character of a line is an asterisk (*), the line is treated as a comment. Each line is composed of entries that are position-dependent, separated by white space and having the following format:
partition tag flag starting_sector size_in_sectors
where the entries have the following values:
You can save the output of a
prtvtoc(8) command to a file,
edit the file, and use it as the datafile argument
For disks under two terabytes,
cannot write a VTOC on an unlabeled disk. Use
format(8) for this purpose.
|March 30, 2022||OmniOS|