Patent ID: 6693761
Filing Date: 2004-02-17
Classification: G11B

Abstract:
A control method of a magnetic disk unit, the magnetic disk unit comprising: a magnetic disk, a head to write and read data to and from the magnetic disk, an actuator to position the head on the magnetic disk, and a load/unload system to unload by taking the head away from the magnetic disk and to load by bringing the head to oppose the magnetic disk;wherein the head comprises a subambient pressure slider having two rail portions on each side of the slider and pad portions on each of the rail portions, the head having a flying characteristic in which a second flying height (Hf2) above the magnetic disk at the second rotational speed is higher than a first flying height (Hf1) above the magnetic disk at the first rotational speed, and wherein at least either loading or unloading is carried out at the second rotational speed which is lower than the first rotational speed at which writing and reading data to and from the magnetic disk by the head is carried out.