Patent ID: 8824262

Claim:
A disk drive comprising: a plurality of disk surfaces each comprising a plurality of data tracks; a plurality of heads including at least one head actuated over each disk surface; and control circuitry operable to: measure a radial offset between a first head and a second head at a plurality of points along a circumference of a corresponding first and second disk surface to generate a first plurality of radial offsets; determine a first radial offset and a second radial offset based on the first plurality of radial offsets, wherein the first radial offset corresponds to approximately a maximum in the first plurality of radial offsets and the second radial offset corresponds to approximately a minimum in the first plurality of radial offsets; store a plurality of access commands in a command queue; and execute a rotational position optimization (RPO) algorithm to select a next access command to execute from the command queue, wherein the RPO algorithm is responsive to the first and second radial offsets.