Patent ID: 6920009

Claim:
A magnetic disk apparatus, comprising: a magnetic disk; a rotation mechanism for rotationally driving said magnetic disk; a magnetic head slider, being attached to be movable in a radial direction of said magnetic disk while flying on a surface thereof; a controller portion for controlling said magnetic head slider at position thereof, in the radial direction of said magnetic disk; and an load/unload mechanism for loading said magnetic head slider from a ramp portion onto said magnetic disk or unloading it onto the ramp portion, wherein said magnetic disk comprises: a load/unload zone having a predetermined length in a peripheral direction thereof, for performing loading/unloading of said magnetic head slider on/from a surface of said magnetic disk by means of said load/unload mechanism; and a specific pattern recorded in front of said load/unload zone in the peripheral direction thereof, and said controller portion reads out said specific pattern recorded on said magnetic disk by means of said magnetic head slider, and controls said magnetic head slider on position thereof, so that it moves while avoiding said load/unload zone.