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Abstract

A method of manufacturing a disk drive (10) including determining and implementing skew values for each head (12a-12d) of the disk drive (10) during a production test phase is provided herein. The method for each head (12a-12d) includes initiating a head switch test series, measuring a head switch time, computing an average head switch time, computing a standard deviation of the head switch times, and computing a head skew based on the average and the standard deviation of the head switch times. The method for each head (12a-12d) further includes initiating a single-cylinder seek test, measuring a single-cylinder seek time, computing an average single-cylinder seek time, computing a standard deviation of the single-cylinder seek times, and computing a cylinder skew based on the average and the standard deviation of the single cylinder seek times. The present invention also includes a disk drive (10) that includes a base (24), at least one storage disk (14), at least one actuator arm (26a-26d) for positioning each of the heads (12a-12d) near the storage disk (14), and skew settings for each of the heads (12a-12d) determined during a production test phase of the disk drive (10) manufacturing process. Individual skew settings for each head (12a-12d) ensure a greater precision in disk drive (10) operation and an increased efficiency of the disk drive (10).

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First Claim