Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

While running Ubuntu, sometimes my disks suddenly become read-only, and any write attempt on it result in error: Read-only file system, but mount -l shows that disk as rw.

After restarting, some failures are detected in disk and fsck fix the problem, but after a while all of this happens again. What is the cause of this situation and how it can be fixed permanently?

share|improve this question
up vote 2 down vote accepted

Check the system logs for HDD related errors. Use smartctl -a output to check for reallocated sectors count. Most probably your HDD is about to fail badly.

share|improve this answer
Well, not a very a comprehensive answer, but accepted for noting the probability of HDD failure. In fact, my HDD became completely unusable after a few day and even ubuntu was unable to boot. – Amir Ali Akbari Dec 7 '12 at 12:40

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.