CHKDSK, short for Check Disk, is a utility that checks the integrity of the files and file structure of your hard disk. I’ll walk you through it.

Leo A. Notenboom has been playing with computers since he was required to take a programming class in 1976. An 18 year career as a programmer at Microsoft soon followed. After "retiring" in 2001, Leo started Ask Leo! in 2003 as a place for answers to common computer and technical questions. More about Leo.