Patent ID: 7190546

Claim:
A system for writing position information to a rotatable medium, comprising: a rotatable medium capable of storing information written to the rotatable medium, the rotatable medium having an inner diameter and an outer diameter; a write element capable of writing information to the rotatable medium; and a control mechanism adapted to rotate the rotatable medium and position the write element relative to the rotatable medium, such that the write element can: write a first servo burst during a first pass of a write element over a rotatable medium; trim the first servo burst during a second pass of the write element; write a second servo burst during a third pass of the write element; and write at least one additional servo burst during at least one subsequent pass of the write element, the number of additional servo bursts being dependent upon the location of the additional servo bursts relative to at least one of the inner diameter and outer diameter, wherein the first servo burst, second servo burst, and any additional servo bursts each have an edge that can be used to determine position during a subsequent pass over those servo bursts.