39
8
I installed Linux Mint 12 KDE, and I would like to check the root partition for any errors.
How do I check the root partition with fsck at boot time?
39
8
I installed Linux Mint 12 KDE, and I would like to check the root partition for any errors.
How do I check the root partition with fsck at boot time?
52
sudo touch /forcefsck
Then reboot.
23
You can use shutdown command for this too.
shutdown -rF now
From man:
The -F flag means 'force fsck'.
This only creates an advisory file /forcefsck which can be tested by the system when it comes up again. The boot rc file can test if this file is present, and decide to run fsck(1) with a special `force' flag so that even properly unmounted file systems get checked. After that, the boot process should remove /forcefsck.
4
Here is another way to do this:
tune2fs -C 2 -c 1 /dev/THEDEVTHATROOTIS
reboot
then the filesystem will be checked, and once all is good you should do
tune2fs -c 60 /dev/THEDEVTHATROOTIS
I have assumed that the max-mount-count was set to 60, you should find out before issuing the first command with
dumpe2fs /dev/THEDEVTHATROOTIS |grep "Maximum mount count"
4your answer is good and ... should work most of the time (I mean on most of standard installed Linux) BUT, you ASSUME that root partition is ext2,3,4 formatted, what if is something else like xfs or reiserfs ? :) – THESorcerer – 2014-09-14T08:17:52.907
True this is a 9/10 solution. – g24l – 2015-01-28T09:38:14.240
2
On my systems (several x86 notebooks and a Banana Pi Pro), saying sudo shutdown now
brings me to runlevel 1 (aka maintenance mode) where I can safely check my root FS:
mount -o remount,ro /dev/rootpartition
fsck /dev/rootpartition
reboot
There's no need to alter /etc/fstab
to do this, and I have the opportunity to run fsck
with whatever options that may be needed to fix a tricky case.
Note: /forcefsck
and tune2fs
tricks work on x86, but not on Banana Pi.
It would be possible to make tune2fs
etc work on any platform, given that a (possibly embedded) initramfs is supported. So it really just depends on the Linux distribution. – Daniel B – 2015-09-16T18:12:57.057
Answer not working for remote checkings. – Sopalajo de Arrierez – 2016-02-20T13:47:51.103
@SopalajodeArrierez Yeah, you need access to a local terminal in single user mode, hence the name. – Dmitry Grigoryev – 2016-02-22T11:02:39.510
0
If you are on a Raspberry pi and you find yourself in emergency mode, you can in fact unmount the root partition and still use fsck
(login as root)
mount -o remount,ro /
fsck
reboot
-3
On modern linux systems the answers above (with forcefsck) don’t work. You have to do it manually:
Put your root partition into read-only mode by modifying the faulty partition’s line on /etc/fstab
(but remember your old settings):
UUID=fd1d0fad-3a4c-457f-9b5e-eed021cce3d1 / ext4 remount,ro 1 1
Reboot
Switch to runlevel 1 just to minimize the amount of interfering processes:
init 1
Fix your file system (replace /dev/sda2 with your partition’s device), which should now work because the root partition is in read only:
fsck /dev/sda2
Reboot. (On my Fedora 21 system I had to change to runlevel 1 during boot with Grub2, because otherwise the system was stuck due to not being able to write on the root-partition)
Make your root file system readable/writable:
mount -o remount,rw /dev/sda2
Restore your /etc/fstab to its original state.
Reboot
4Could you please elaborate on these “modern Linux systems”, that are, in keeping with the question, Linux Mint? – Daniel B – 2015-09-16T18:23:38.313
7
shutdown
supplied with Upstart does not support the-F
option any more. You should usesudo touch /forcefsck
instead. See for example Why was -F removed from /sbin/shutdown? and Bug #74139: shutdown missing -F (force fsck) option. – pabouk – 2014-10-14T10:48:53.563is linux mint 12, should work – Francisco Tapia – 2015-09-16T18:19:48.707
1I tried this with Linux Mint 15 MATE and it didn't cause a check when rebooting. But
sudo touch /forcefsck
worked when I did that beforesudo reboot
. – Colin D Bennett – 2013-11-06T16:54:24.570