Patent ID: 7215498

Claim:
A data storage device, comprising: a housing; a rotatable medium connected with the housing, said rotatable medium including a template pattern having a marker zone; an actuator rotatably connected with the housing; a head operably connected with the actuator, the head being adapted to access the rotatable medium; a ramp associated with the housing, ramp being adapted to remove the head from accessing the rotatable medium; a crash stop associated with the housing; a machine readable medium having instructions to: determine a location of a marker zone edge of the template pattern; determine a location of the ramp relative to the marker zone edge; determine a location of the crash stop relative to the marker zone edge; calculate a width of a data stroke based on the location of the ramp and the location of the crash stop; compare the width of the data stroke to one or more criteria; and a processor adapted to execute the instructions.