IMPLEMENTING ENHANCED IN-SITU MONITORING OF HEAD OVERCOAT WEAR FOR CONTROLLED BURNISHING AND EARLY DETECTION OF HEAD FAILURE IN HDD

摘要

A method, apparatus, and system are provided for implementing in-situ monitoring of head overcoat burnishing and early detection of head failure in a hard disk drive (HDD). A voltage is applied across a slider-disk interface between the slider body and the disk. Realtime monitoring of electrical current flowing across the slider-disk interface is performed for determining an amount of burnishing of the slider.

主权项

1. A method for implementing in-situ monitoring of head overcoat burnishing for a hard disk drive (HDD), said method comprising:
applying a voltage across a slider-disk interface between a slider body and a disk, and responsive to the applied voltage across a slider-disk interface, performing realtime monitoring of electrical current flowing across the slider-disk interface, and determining an amount of burnishing of the slider.