CheckDisk is a tiny (less than 400 KB) and free tool, designed to search for and then eliminate errors on the disk. It is able to analyze the device in 3 modes - superficial, thorough and with the option of error checking. The program allows you to scan the disk sector by sector and to mark the damaged ones as unusable.

CheckDisk supports all commercially available hard disk drive models - including SCSI and RAID arrays. The advantage of the application is that there is no need to install it - it is ready to use right after downloading.