Patent ID: 6798610
Filing Date: 2004-09-28
Classification: G11B

Abstract:
A disk drive, comprising:first and second disk surfaces that are substantially parallel with and spaced from one another; first and second heads for transferring data to and from the first and second disk surfaces, respectively; a multi-stage actuator that includes a primary actuator for positioning the first and second heads, a first secondary actuator for positioning the first head, and a second secondary actuator for positioning the second head; and a data transfer device that includes a servo system and a servo pattern generator, wherein the data transfer device causes the first head to write a first servo track to the first disk surface while the primary actuator positions the first and second heads without using the second head, and the data transfer device causes the second head to write a second servo track to the second disk surface while the primary actuator positions the first and second heads in response to servo information that the first head reads from the first servo track.