Ron Johnson wrote:
fsck (FileSystemChecK) is the canonical tool.
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Best done on an unmounted filesystem, so if you need to run it
against / you should boot into a Live CD and run it from there.
Is this a general question, or do you have a possibly bad disk?
Oftentimes, when I boot the kernel, a file system integrity check is forced during bootup. This typically happens after I have used Windows XP.
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