I remember what it was now, I had mounted in fstab, but using the device path (e.g. /dev/sdb1) instead of the UUID of the disk. The device path seems to occasio

I remember what it was now, I had mounted in fstab, but using the device path (e.g. /dev/sdb1) instead of the UUID of the disk. The device path seems to occasionally change (which is bizarre as it is the only device connected). Using a UUID does the trick. But it was just an example of many minor details that needed to be fiddled with in order to create a 24/7 laptop server. I don't mind - it's part of the fun I guess, but I'm just waiting for the next edge case.