Finding the UUID
The UUID (Universally Unique Identifier) for all disks on the system can be found using:
ls -l /dev/disk/by-uuid
The fstab file is typically found in /etc/fstab.
If the UUID for disk you want to mount is 4aefa6e1-f473-455e-9baf-fcfdd97cc7e6, then fstab can be updated by adding something similar to what’s shown below (for a simple ext4 partition with default settings):
#mounting data drive UUID=4aefa6e1-f473-455e-9baf-fcfdd97cc7e6 /path/to/mount/point ext4 defaults 0 0