Trying to discover why I get incorrect mounts, I edited /etc/fstab in Daryna after backing it up - I commented out all the UUIDs and uncommented the sdxxs - didn't work so restored it from a terminal safe boot offered by Supergrub. I feared I might have to re-install but it re-booted OK.
Next, I would like to try adding a UUID, hoping to mount sdc1 in Celena - at present it appears only as a commented line, no UUID is given.
How can I find a value to insert there? I've read the Wikimint - brief and not comforting!
Alternatively, I believe there are ways of specifying mounts in grub - but the manual doesn't explain how.