A disc drive including a transducer supported on the head suspension
assembly to induce a transducer signal in response to head vibration. The
transducer signal is level detected to output a level detected signal
indicative of head vibration. A method for detecting head vibration via a
transducer on a head suspension assembly. The transducer on the head
suspension assembly operating between a detection mode and an actuator
mode for selectively detecting vibration and actuating the head.