List devices uuid (may need to reboot for new) 

ls /dev/disk/by-uuid/
 

show device uuid: 

vol_id /dev/sdx 
  or
blkid /dev/sdx
 

create a new uuid

uuidgen
 

Change the uuid of a device

tune2fs -U <UUID>  <device>  
# UUID are initialy created with mkfs.