The invention includes a yoke assembly containing a top and a bottom
proximity latch magnet. The invention includes a voice coil attached to a
voice coil bias steel. The crash stop includes a magnetic proximity latch
created by the voice coil bias steel attracted to the top and bottom
proximity latch magnets. It may also include using the magnetic proximity
latch with a magnetically weakened contact latch. Experiments have shown
that the combined magnetic proximity latch and the magnetically weakened
contact latch require significantly less initial releasing force than the
prior art crash stops, and meet rotary shock requirements. The invention
includes making the actuator assembly, the voice coil motor assembly, and
the CSS hard disk drive. The invention includes operating the CSS hard
disk drive with at least the magnetic proximity latch.