"The basic format is:CHKDSK d:filename.ext /f /v Using the filename causes it to be checked for continuity (i.e., being stored on contiguoussectors on the disk for more efficient access). ??? /f tells DOS to automatically fix the FAT and other problems ??? /v is a verbose mode that shows progress as disk checking is taking placeExample:Only use the version of CHKDSK that came with your version of o" . . . .