METHOD AND SYSTEM FOR DETECTING A CHANGE IN A ROTATIONAL VELOCITY OF A MAGNETIC DISK OR A SPINDLE COUPLED TO THE MAGNETIC DISK

摘要

A method according to one embodiment comprises detecting a change in a rotational velocity of a magnetic disk or a spindle coupled to the magnetic disk, the change being caused by head-disk contact. A method for detecting head-disk contact according to another embodiment comprises measuring a rotational velocity of a magnetic disk or a spindle coupled to the magnetic disk; detecting a change in the rotational velocity, the change being caused by head-disk contact; and correlating the change in rotational velocity with the head-disk contact.