A magnetic storage media includes a magnetic first-pole polarity initialized servo track segment and a magnetic second-pole polarity differential timing based servo pattern recorded on the magnetic first-pole polarity initialized servo track segment The magnetic second-pole polarity differential timing based servo pattern represents magnetic encoded servo position information for facilitating a determination of a servo position error signal exclusive of a plurality of fixed position error timing components and inclusive of a plurality of variable position error timing components.

 
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< Servo track squeeze compensation in a disk drive

> Passive fly height adjustment to compensate for ambient pressure changes in a disk drive

> Flux shunt structure for reducing return pole corner fields in a perpendicular magnetic recording head

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