I saw this in the system log: EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro. What is the meaning of this error?

How to fix it?

Relevant output:

$ dmesg | grep mount
[    1.515956] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[    2.750742] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro
  • What is the output of dmesg | grep mount? – Rohith Madhavan Dec 20 '14 at 15:36
  • @RohithMadhavan See the edit. – Ionică Bizău Dec 20 '14 at 15:37

It's not an error, it just tells you that the partition /dev/sda1 has been remounted with the mount option errors=remount-ro. It's nothing you need to worry about. It may happen e.g. during a normal system startup if /dev/sda1 is your root partition.

The mount option means that the system should mount the partition read-only if an error occurs to minimize further damage or data loss and is used by default.

| improve this answer | |
  • 1
    But why does it mount for then to remount the partition - is do to initramfs? – Morten Aug 8 '17 at 7:39
  • My Lubuntu 18.04.1 does not shut down properly. The last entry in the shut-down log produced as described in the "Debugging boot/shutdown problems" section of /usr/share/doc/systemd/README.Debian.gz says 'EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro'. Could that be causing problem described by another user in askubuntu.com/q/620132/288322? Thanks for a hint! – Rantanplan Oct 27 '18 at 17:26

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