It is /etc/fstab file that manages the mounting of partitions during boot time. The following snapshot is a duplication from bigStack.
The UUID of a Linux partition is the Universally Unique IDentifier of that partition. These UUIDs are considered ideal for selecting file systems while mounting.
- Use ‘lsblk’ to print the universally identifier for a device.
- Replace device IDs with UUIDs by editing the /etc/fstab file.