A disk drive is disclosed comprising a disk, a spindle motor operable to rotate the disk, a
head actuated over the disk, an interface operable to receive a host supply voltage, and a …

The present invention may be embodied in a method for adaptive fundamental-frequency
repeatable runout (1FRRO) learning in a disk drive to reduce learn time. In the method …

BACKGROUND Disk drives comprise a diskanda head connected to a distal end of an
actuator arm which is rotated about a pivot by a voice coil motor (VCM) to position the head …

A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of
servo tracks defined by servo sectors. The head is positioned over a first servo track, and a …

BACKGROUND Spinstands are used for multiple purposes With respect to disk media,
including disk media characterization, testing, and development. In order to perform such …

(57) ABSTRACT A disk drive is disclosed comprising a disk comprising a plurality of data
tracks defined by servo sectors. Each servo sector comprises a periodic preamble recorded …

BACKGROUND Disk drives comprise a diskanda head connected to a distal end of an
actuator arm which is rotated about a pivot by a voice coil motor (VCM) to position the head …

Abstract Systems and methods for improving accuracy of head positioning using existing
servo patterns are provided. In one embodiment, a method for improving read head …

A data storage device is disclosed comprising a head actuated over a disk and a vibration
detector configured to generate a vibration signal in response to a vibration affecting the …

A disk drive is disclosed comprising a plurality of disk surfaces including a first disk surface
and a second disk surface. The disk drive further comprises a plurality of heads including a …