As is common in Linux, everything is a file (except for networking stuff, but that's beyond the scope of this guide) and so is the /etc/fstab file. To be safe, copy the contents of this file to a backup location.
'''cp /etc/fstab /etc/fstab.bak '''
Next, obtain the UUID's of each partition in your system. For that, we have the blkid command:
'''blkid /dev/sd* >> /etc/fstab '''
< more to come >