Disk drive with improved characterization segment pattern and method of recording the same

摘要

A disk drive and related method, the disk drive including a rotating magnetic disk and read and write elements for reading and writing data from and to the rotating magnetic disk, comprising: a magnetic characterization pattern recorded on the rotating magnetic disk for use in characterizing widths of the read and write elements using a plurality of track profiles of differing width. The magnetic characterization pattern is uniquely formed from a first plurality of characterization segments of a first radial width disposed circumferentially about a full circumference track on the rotating magnetic disk and a second plurality of characterization segments of a second radial width that is different than the first radial width disposed circumferentially about the same full circumference track on the rotating magnetic disk. The beneficial result is that two measurements can be accomplished within the STW in roughly the same time it ordinarily takes to accomplish only one.