Patent ID: 6999261
Filing Date: 2006-02-14
Classification: G11B

Abstract:
1. A magnetic disk device comprising: a magnetic disk for storing information; a spindle motor for driving said magnetic disk to rotate; a magnetic record head for recording information on said magnetic disk; a magnetic reproduce head for reproducing information from said magnetic disk; an actuator having a suspension for supporting said magnetic heads to be movable on said magnetic disk and drive means for driving said suspension; a loading/unloading path for loading/unloading said magnetic record head and said magnetic reproduce head onto/from said magnetic disk; and a stopper for limiting the movable range of said actuator, wherein a recording region detecting signal is written on said magnetic disk just when said magnetic heads are loaded on said magnetic disk that has no positioning signal recorded for positioning said magnetic heads, and a track region on said magnetic disk is determined on the basis of the position at which said recording region detecting signal has been written; wherein a propagation-purpose pattern is sequentially recorded on said magnetic disk from a stop position at which said magnetic heads are stopped by said stopper in the radius direction, and when said recording region detecting signal is detected, the detected position is determined to be one end of said track region.