The present invention relates to an apparatus and method for compensating for an actuator arm oscillation induced by this disk drive of the navigation data processing system resonance mode. The actuator arm supports a head adjacent a recording surface and the servo loop controls the position of the actuator arm. The search is started in order to arm vibration frequency is identified as moving the head from track jongchak 302, after which the first track on the recording surface (304). Position and an error signal (PES) is generated to indicate the position of the head on the track being jongchak, the compensation signal produced by the filter based on the frequency of the PES and the actuator arm oscillation. The compensation signal is adapted to remove a component of the PES arising from the actuator arm oscillation, and is applied to the servo loop for stable mode 306. The compensation signal is removed if the accelerated stability, reached more quickly in the tracking mode, the track 308, then the compensation signal is reduced or not (310).
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