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That means don't use it 'then'. You should never run a disk check on a mounted filesystem because of the read-write issues. Umount the drive (if this is your root drive boot up into rescue mode with your CD) and then run fsck on it.
Originally posted by MasterC That means don't use it 'then'. You should never run a disk check on a mounted filesystem because of the read-write issues. Umount the drive (if this is your root drive boot up into rescue mode with your CD) and then run fsck on it.
Most likely it's going to be:
Drop in your INSTALL cd to your cdrom, start up your system, once you get to the point where you "press enter to continue or F1 for help" you press F1, type in rescue and it loads rescue mode. However, that's for a mandrake system, I'm sure RH isn't far different, but the documentation should discuss it.
Something to note:
Your drives are automatically checked with fsck after so many reboots or a given amount of time (usually 20-30 reboots and 50-70 days) to ensure data is not getting corrupted. This is done during bootup when the drives are not mounted.
You don't have to have /etc/fstab to run fsck. Once you are in rescue mode, be sure your device that you want to scan isn't mounted (you can check with:
If it's listed, umount it with:
And then run fsck on it: