Вот так у меня fstab выглядит:
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
#
# / was on /dev/sda3 during installation
UUID=3a7d9cb3-80a0-40dd-bd8f-1193c86e9b26 / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sda1 during installation
UUID=49E7-3A3F /boot/efi vfat umask=0077 0 1
# swap was on /dev/sdb3 during installation
UUID=26bce490-9995-4577-b6bb-8a78f38b1ab8 none swap sw 0 0