Patent ID: 7092183

Claim:
A template pattern for a reference surface of a disk for a hard disk drive having a head connected with a rotary actuator, the template pattern comprising: a servo wedge having a first end and a second end disposed between the first end and an outer diameter of the disk, the servo wedge including: a plurality of pulses extending from the first end to the second end; a plurality of zig-bursts extending from the first end to the second end, the zig-bursts forming a zig angle relative to the plurality of pulses, the zig angle varying along at least a portion of the plurality of zig-bursts; and a plurality of zag-bursts extending from the first end to the second end, the zag-bursts forming a zag angle relative to the plurality of pulses, the zag angle being a chevron angle; and wherein the zig angle at the second end is a chevron angle and the zig angle at the first end is less than the chevron angle; wherein the zig angle and the zag angle diverge from the plurality of pulses in opposite directions relative to the plurality of pulses.