Patent ID: 7330330

Claim:
A system for writing position information to a rotating medium, comprising: a rotatable medium to store information; a write element to write information to the rotatable medium; a control mechanism to rotate the rotatable medium and position the write element relative to the rotatable medium; and a machine readable medium including instructions to: write a first servo burst during a first servowriting step of the write element over the rotatable medium; trim a first portion of the first servo burst during a first pass of a second servowriting step of the write element; trim a second portion of the first servo burst during a second pass of the second servowriting step of the write element; write a second servo burst during a third pass of the second servowriting step of the write element, wherein the first servo burst and second servo burst each have a substantially common edge that can be used to determine the position of the write element during a subsequent pass over those servo bursts; and demodulate the first portion and the second portion of the first servo burst so that written-in runout is reduced.