Patent ID: 8270116

Claim:
A magnetic disk drive comprising: a magnetic recording medium for recording information; and a magnetic head slider adapted to fly over a surface of the magnetic recording medium and read or write information from or to the magnetic recording medium; wherein the magnetic head slider includes a slider air bearing surface opposed to the surface of the magnetic recording medium and a magnetic transducer for read or write of information; wherein the slider air bearing surface comprises: a front pad comprising, on a leading edge side, a front rail surface and a front step bearing surface deeper than the front rail surface; a rear pad comprising, on a trailing edge side, a rear rail surface and a rear step bearing surface deeper than the rear rail surface; and a negative-pressure groove interposed between the front pad and the rear pad; wherein the magnetic transducer is disposed near a trailing edge of the rear rail surface of the rear pad; and wherein a vibration suppressing groove is formed in the rear rail surface of the rear pad so as to be deeper than the rear rail surface, shallower than the negative-pressure groove, and is entirely closed about its periphery.