попробовал:
ed@ed-A780L3C:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 298,1G 0 disk
├─sda1 8:1 0 19,5G 0 part /media/ed/9ACC84DFCC84B6D3
├─sda2 8:2 0 1K 0 part
├─sda5 8:5 0 163G 0 part
├─sda6 8:6 0 1,6G 0 part [SWAP]
├─sda7 8:7 0 105,6G 0 part /media/ed/24c4c174-ba25-4a1f-afd5-8fb6be4a9c11
└─sda8 8:8 0 8,4G 0 part /
sr0 11:0 1 1024M 0 rom
sr1 11:1 1 1024M 0 rom
ed@ed-A780L3C:~$ 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/sda8 during installation
UUID=dddb6f44-568e-4bce-9570-a8cbb698e585 / ext4 errors=remount-ro 0 1
# swap was on /dev/sda6 during installation
UUID=0d151e2b-02f5-45e4-a3a3-d00d156fb457 none swap sw 0 0
/dev/sr1 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0
ed@ed-A780L3C:~$ sudo blkid
[sudo] password for ed:
/dev/sda1: UUID="9ACC84DFCC84B6D3" TYPE="ntfs"
/dev/sda5: UUID="62D8844BD8841F81" TYPE="ntfs"
/dev/sda6: UUID="0d151e2b-02f5-45e4-a3a3-d00d156fb457" TYPE="swap"
/dev/sda7: UUID="24c4c174-ba25-4a1f-afd5-8fb6be4a9c11" TYPE="ext4"
/dev/sda8: UUID="dddb6f44-568e-4bce-9570-a8cbb698e585" TYPE="ext4"
ed@ed-A780L3C:~$
И что далее? Изменений нет, или перезагрузить надо?