Thinkpad Hardware Maintenance Diskette Version 1.76 [verified] (Original GUIDE)

Older ThinkPads are notorious for their security features. If a user set a Hard Disk Password (HDP) and forgot it, the drive is effectively a paperweight. While the HMD cannot always crack a password on a locked drive (due to encryption), it provides the interface to clear the password sectors on new, blank drives or reset the User and Master password flags on the system board if the correct authority is present.