Why is an entry added to /etc/fstab instead of relying only on a manual mount command?
/etc/fstab
mount
fstab formats every listed device each time the system starts
fstab
A manual mount is already permanent, while fstab is only a temporary log
fstab copies all storage data into the root filesystem
fstab records what storage should be mounted and where so the configuration can be applied after reboot