A disk drive is disclosed employing a primary actuator for rotating an actuator arm about a pivot in coarse movements, and first and second secondary actuators coupled to the actuator arm for actuating first and second heads in fine movements. A servo control system generates a first control signal applied to the first secondary actuator to position the first head over the first disk surface in fine movements while accessing the first disk surface. The servo control system phase shifts the first control signal by a predetermined phase to generate a second control signal applied to the second secondary actuator to attenuate excitation of at least one arm vibration mode.

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< Disk drive having internal data structures for efficiently storing repeatable runout cancellation information

< Magnetic recording medium and magnetic recording/reproducing apparatus using the same

> Surface planarization processes for the fabrication of magnetic heads and semiconductor devices

> Back EMF voltage transducer/generator to convert mechanical energy to electrical energy for use in small disk drives

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