Home / ubuntu / Questions / 1090066
Accepted
heynnema
Asked: 2018-11-05 13:28:58 +0800 CST

Can't run fsck in recovery mode in >18.04. Disk is mounted r/w

  • 772

New problem in >18.04...

I just discovered that the way I've always used fsck at the root access in recovery mode no longer works. It used to be:

fsck -f /

But now it tells me that the disk is mounted r/w, and it won't run. Sure enough the disk IS mounted r/w. This is new behavior. Trying to remount the disk as ro doesn't work either.

mount -o remount,ro /

And, running fsck from the recovery mode menus doesn't work either.

Running fsck while booted to a Ubuntu Live USB works of course.

Anybody got an idea why I can't fsck in recovery mode, and what's changed that causes the disk to be mounted r/w?

fsck 18.04 18.10

1 Answers

  1. Best Answer

    For 18.04 or newer... you MUST do it this way...

    • boot to a Ubuntu Live DVD/USB
    • open a terminal window by pressing Ctrl+Alt+T
    • type sudo fdisk -l
    • identify the /dev/sdXX device name for your "Linux Filesystem"
    • type sudo fsck -f /dev/sdXX, replacing sdXX with the number you found earlier
    • repeat the fsck command if there were errors
    • type reboot
    • 7