Hi, kaye n wrote: > bash: blkid: command not found > kaye@laptop:~$ whereis blkid > blkid: /usr/sbin/blkid /usr/share/man/man8/blkid.8.gz So /usr/sbin is not in your $PATH list of directories. Try by absolute path /usr/sbin/blkid or by being the intended user of /usr/sbin sudo blkid Have a nice day :) Thomas