A hard disk drive that includes a voice coil motor and a micro-actuator. The micro-actuator is controlled by a servo that utilizes a micro-actuator controller and a corresponding micro-actuator transfer function. The servo enters a mode to self-determine at least one transfer function coefficient of the micro-actuator controller.

 
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< Disk device with bi-directional communication function

> Multi-arm disk drive system having interleaved read/write operations and method of controlling same
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