respectively correspond to one another similarly to the comparative example 1 a shows an outer stopper position where the actuator abuts against the outer stopper b shows an inertia latch catch position where the inertia latch engages the actuator and c shows a head loading position where the magnetic head starts loading onto the magnetic disk in the case of the comparative example 2 although a sufficient magnetic attraction force exists in the outer stopper position a the application range of the magnetic attraction force is narrow for example if the inertia latch acts due to an impact and the actuator turns to the inertia latch catch position the actuator cannot return to the outer stopper position by its own force and if an impact is again received thereafter there is a possibility that the actuator turns toward the head loading position from the inertia latch position the inertia latch cannot be carried out in time and the magnetic head loads on the magnetic disk if the comparative examples 1 and 2 are combined the above drawbacks can be overcome but this results in the cost being increased fig8 is a diagram showing a magnetic attraction force received by the plate from a stationary magnet in a magnetic disk apparatus.