Optics Research, Inc.

Gregory Black Shonle

Lance Leslie Flake

A method comprises receiving a diskette into a drive, determining the logical format type of the data written on the diskette, and targeting any recorded track on either surface of the diskette that has both inner and outer adjacent tracks. The head actuator in the drive is moved to the expected position for the targeted track that has been determined by a factory precalibration. The head actuator is then stepped inside by one sixteenth of the width of a standard track pitch and an attempt is made to read a sector header from the recorded track. If the reading of the sector header succeeded, the head actuator is stepped in again by one sixteenth and the sector header is read again. Such inward stepping is continued until the reading of the sector header fails. The radial position at which this occurs is defined as the inner boundary of the track. The outer boundary is found in similar fashion. The track center is computed as the midpoint between such inner and outer boundaries. The track centers for all the other tracks on the diskette are then assumed to be consistently registered from the targeted track's center.

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Boulder, CO, United States of America

Gregory Black Shonle