UUID or label of ext2 file system in LINUX

To view a file system's UUID or Label,

>vol_id /dev/sda1



To change of an ext3 file system's UUID

>uuidgen

>tune2fs /dev/sda1 -U "new-uuid-number"

>vol_id /dev/sda1


To change of a ext3 file system's label

>tune2fs /dev/sda1 -L "new-label"