0
I need the UUID of a disk partition under Linux. The partition is mounted but does not show up under
ls -l /dev/disk/by-uuid
as can happen when duplicate UUIDs exist, for example, following emergency backup using ddrescue.
How can I find the UUID?
goangit
Posted 2014-12-12T04:00:41.990
Reputation: 183
3
The e2fsprogs package offers blkid
$ blkid
/dev/sdb1: UUID="ac115722-c8ce-44d2-ab0c-1d284d6e4d76" TYPE="ext4"
/dev/sda2: UUID="cd6580d2-9671-4d94-b46f-0301bb563e30" TYPE="ext4"
...
In table format
$ blkid -o list
device fs_type label mount point UUID
-------------------------------------------------------------------------------
/dev/sdb1 ext4 /mnt/dmp1 ac115722-c8ce-44d2-ab0c-1d284d6e4d76
/dev/sda2 ext4 / cd6580d2-9671-4d94-b46f-0301bb563e30
...
For a specific device
$ blkid /dev/sdb1
/dev/sdb1: UUID="ac115722-c8ce-44d2-ab0c-1d284d6e4d76" TYPE="ext4"
Or with no extraneous information
$ blkid -s UUID -o value /dev/sdb1
ac115722-c8ce-44d2-ab0c-1d284d6e4d76
Those subsequently wanting to change UUIDs might like these answers for ordinary and LVM partitions.
goangit
Posted 2014-12-12T04:00:41.990
Reputation: 183