Patent ID: 6937439

Claim:
A head stack assembly for a disk drive having a disk, the head stack assembly comprising: a body portion including a bore defining a pivot axis; an actuator arm cantilevered from the body portion; a head gimbal assembly supported at the actuator arm and including: a load beam; a gimbal coupled to the load beam, and a slider coupled to the gimbal and including a transducer for reading and writing on a recording surface of a disk, the slider including an air bearing surface that is selectively etched to form a shallow recessed surface and a deep recessed surface, the air bearing surface including a leading air bearing region and at least one insular region configured to reduce stiction with the disk, the leading air bearing region and the at least one insular region being substantially co-planar so as to define a single radius of curvature, the shallow recessed surface being disposed between the air bearing surface and the deep recessed surface.