Me set "data=journal" in etc/fstab file, after that i reboot, but system doesn't booting. After that me boot from LIVE-CD and tried to delete "data=journal" from /etc/fstab, but file works in ro mode.
blkid & /dev/disk/*:
ubuntu@ubuntu:~$ sudo blkid /dev/sda1: UUID="5aab4fef-bdbd-4f6f-bf59-7c164354a8fa" TYPE="ext4" PARTUUID="93d3e9f3-01" /dev/sr0: UUID="2018-10-17-22-44-30-00" LABEL="Ubuntu 18.10 amd64" TYPE="iso9660" PTUUID="133f436e" PTTYPE="dos" /dev/loop0: TYPE="squashfs" /dev/loop1: TYPE="squashfs" /dev/loop2: TYPE="squashfs" /dev/loop3: TYPE="squashfs" /dev/loop4: TYPE="squashfs" /dev/loop5: TYPE="squashfs" /dev/loop6: TYPE="squashfs" /dev/loop7: TYPE="squashfs" ubuntu@ubuntu:~$ ls -l /dev/disk/by-id total 0 lrwxrwxrwx 1 root root 9 Jan 10 16:17 ata-VBOX_CD-ROM_VB2-01700376 -> ../../sr0 lrwxrwxrwx 1 root root 9 Jan 10 16:17 ata-VBOX_HARDDISK_VB78947f38-edb217dd -> ../../sda lrwxrwxrwx 1 root root 10 Jan 10 16:19 ata-VBOX_HARDDISK_VB78947f38-edb217dd-part1 -> ../../sda1 ubuntu@ubuntu:~$ ls -l /dev/disk/by-uuid total 0 lrwxrwxrwx 1 root root 9 Jan 10 16:17 2018-10-17-22-44-30-00 -> ../../sr0 lrwxrwxrwx 1 root root 10 Jan 10 16:19 5aab4fef-bdbd-4f6f-bf59-7c164354a8fa -> ../../sda1 ubuntu@ubuntu:~$ ls -l /dev/disk/by-label total 0 lrwxrwxrwx 1 root root 9 Jan 10 16:17 'Ubuntu\x2018.10\x20amd64' -> ../../sr0