widon@widon-X401A:~$ sudo blkid
/dev/sda7: UUID="4e532d4a-692b-4836-8c7b-3d2e371480c5" TYPE="ext4" PARTUUID="821a821a-07"
/dev/sda1: UUID="343d755f-3659-4df4-b716-2656f97550c1" TYPE="ext4" PARTUUID="821a821a-01"
/dev/sda5: UUID="d481f5d2-5566-4396-a7fd-2e3d3469adaa" TYPE="ext4" PARTUUID="821a821a-05"
/dev/sda6: UUID="febeac31-da8d-42c0-bc07-6d944505ebe4" TYPE="swap" PARTUUID="821a821a-06"
widon@widon-X401A:~$ cat /etc/fstab
# /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).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sda5 during installation
UUID=d481f5d2-5566-4396-a7fd-2e3d3469adaa / ext4 errors=remount-ro 0 1
# /home was on /dev/sda7 during installation
UUID=4e532d4a-692b-4836-8c7b-3d2e371480c5 /home ext4 defaults 0 2
# /opt was on /dev/sda1 during installation
UUID=343d755f-3659-4df4-b716-2656f97550c1 /opt ext4 defaults 0 2
# swap was on /dev/sda6 during installation
UUID=febeac31-da8d-42c0-bc07-6d944505ebe4 none swap sw 0 0
看起来没有错啊