In Microsoft Windows systems, a built-in utility for checking for errors on a hard disk volume. To access this utility, open the Properties dialog box of the volume you want in Windows Explorer or My Computer, select the Tools tab, and click the Check Now button. This displays the Check Disk dialog box, which has two options:
All files must be closed on the volume for Check Disk to attempt to correct errors. If files are open, you will be prompted to schedule Check Disk to run at the next system restart. If Check Disk is run on an NTFS volume, bad clusters will automatically be replaced and all file transactions will be logged.