In a magnetic head slider of a magnetic disk apparatus, including therein a load/unload
mechanism for loading/unloading the magnetic head slider 2 to the magnetic
disk, on which is defined a load/unload zone 12 of a predetermined length
in a peripheral direction thereof, wherein a specific command or pattern 14
is recorded in front of the load/unload zone of the magnetic disk, in the peripheral
direction thereof, and a controller moves the magnetic head slider onto a track
in an inside thereof, so as to avoid passing on or above the load/unload zone,
when reading out this specific command recorded, and then moves it back onto that
track, again, during when reading/writing data on the track lying on the same radius
to that of the load/unload zone.
