Patent ID: 7907360

Claim:
A method comprising: performing a linear density measurement on each of a first writer and a second writer at a data track that is located substantially at a nominal setpoint location along a radius of a storage medium surface; identifying a first data zone of the storage medium surface in which a measured writing capability of the first writer is greater than a measured writing capability of the second writer; identifying a second data zone of the storage medium surface that is adjacent to the first data zone, and in which a measured writing capability of the first writer is less than a measured writing capability of the second writer, wherein the measured writing capabilities of the first writer and the second writer are based on track densities when a difference between the linear density measurements is less than a predetermined value; and setting a boundary at a location along the storage medium surface that is between the first data zone and the second data zone, wherein the boundary functions as a transition point for selectively operating the first writer and the second writer.