I intend to use fsck for checking my Linux partition of the main disk, because its file system is suspicious of being
not unmounted cleanly
by shutting down the system. I have searched in my environment variables: none of them except of PATH should control the fsck program. But the program apparently needs to be used during a boot:
:~$ fsck -V fsck from util-linux 2.20.1 Checking all file systems. [/sbin/fsck.ext4 (1) -- /] fsck.ext4 /dev/sda6 e2fsck 1.42 (29-Nov-2011) /dev/sda6 is mounted.
WARNING!!! The filesystem is mounted. If you continue you WILL cause SEVERE filesystem damage. Do you really want to continue? no check aborted.
(There is no /forcefsck file in my root according to How do I find out if there will be a fsck during the next boot? . My etc/fstab file contains
# /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). # # proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda6 during installation UUID=1ac55d8d-c112-4bc7-9e79-921d196f9f79 / ext4 errors=remount-ro 0 1 # swap was on /dev/sda7 during installation UUID=54f7e314-50e2-419b-a45d-47c3058ecc00 none swap sw 0 0 /dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0
According to an answer to Slow reboot – understanding fsck and tune2fs I have tried tune2fs hoping that I'll get the present value of the
parameter to be able to set it to 1 for checking the partition during the next boot. But after
sudo rm /var/lib/update-notifier/fsck-at-reboot
and a restart I have only got a response
:~$ tune2fs -l /dev/sda6 tune2fs 1.42 (29-Nov-2011) tune2fs: Permission denied while trying to open /dev/sda6 Couldn't find valid filesystem superblock
Can I use
sudo tune2fs -l /dev/sda6