What are the tag and flags values in the prtvtoc listing of a disk? What is tag 14 and 15?
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Article ID: 100015338
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When looking at the volume table of contents (VTOC) of adisk, there are several column headings regarding the partition layout. To some,the tag and flags entries may be unclear.
Considerthe prtvtoc listingbelow:
# prtvtoc/dev/rdsk/c1t13d0s2
*/dev/rdsk/c1t13d0s2 partitionmap
*
*Dimensions:
* 512bytes/sector
* 502sectors/track
* 3 tracks/cylinder
* 1506sectors/cylinder
* 11896cylinders
* 11894 accessiblecylinders
*
*Flags:
* 1:unmountable
* 10:read-only
*
* First Sector Last
*Partition Tag Flags Sector Count Sector MountDirectory
2 5 01 0 17912364 17912363
3 15 01 0 3012 3011
4 14 01 3012 17909352 17912363
The value in the "Tag"column indicates the type of partition. Note that tags 15 and 14 are notdescribed in the prtvtoc (1M) manpage,as they are created by VERITAS Volume Manager (tm), and represent the privateand public region of the disk when formatted as sliced disk .Disk formatted asCDS disk contains only tag 15.
List of the common partition tags on aSolarisdisk:
Name Number
UNASSIGNED 0x00
BOOT 0x01
ROOT 0x02
SWAP 0x03
USR 0x04
BACKUP 0x05
STAND 0x06
VAR 0x07
HOME 0x08
ALTSCTR 0x09
CACHE 0x0a
Thevalue in the "Flags" column indicates how the partition is to be mounted, thisvalue is not regarded by the mountcommand.
Name Number
MOUNTABLE,READAND WRITE 0x00
NOTMOUNTABLE 0x01
MOUNTABLE,READONLY 0x10
Foradditional information, consult the Solaris 2.x manpage for the mount(1M) command
Issue/Introduction
What are the tag and flags values in the prtvtoc listing of a disk? What is tag 14 and 15?
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