What is Fstab?

Fstab is your operating system’s file system table.

The fstab file is located at:

/etc/fstab

fstab

 

cat /etc/fstab

fstab UUID

You’ll notice all of the entries begin with UUIDs.

 

Using UUIDs in your fstab file, while convenient for most home users, does have a few big caveats.  This doesn’t work when using things like “assembled” or “network-based” devices.  If you’re more of an advanced user, or plan on using things like software RAID in the future, you’re better off not using UUIDs.

source: howtogeek.com/howto/38125/htg-explains-what-is-the-linux-fstab-and-how-does-it-work/