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?


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.

  • 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

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