Chkdsk, short for check disk, is a command on computer that displays the file system integrity status of hard disks and can fix logical file system errors. To run Chkdsk, you must log in as administrator first.
How to run Chkdsk at the command prompt in Windows XP
Note: If one or more of the files on the hard disk are open, the following message will display:
Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts? (Y/N)
Type Y, and then press ENTER to schedule the disk check, and then restart your computer to start the disk check.