Adding an external HDD to fstab
In order to permanently add an external HDD, the best way is to first identfy the UUID and the corresponding file system by typing
sudo blkid
with that information one can edit the fstab
sudo vim /etc/fstab
and enter then there a line with the format
UUID=<UUID> \tab <mountPoint> \tab <filesystem> \tab <options> \tab 0 \tab 1
Here, the values for <UUID> and <filesytem> we get from the blkid command, the mount point is ‘free choice’ and as option, I choose e.g. errors=remount-ro
Once the fstab is populated like this, just try to mount the disc by typing
sudo mount -a