A method for burnishing a slider in a disk drive in which the disk is rotated
in
the opposite or reverse direction from that used to develop the air-bearing and
to read and write data is described. Rotating the disk in the reverse direction
results in no air-bearing being formed and the slider being in contact with the
disk surface. The burnishing removes material over the magnetic transducers in
the slider which separate the transducers from the disk resulting in greater sensitivity.
Optionally the stopping point for burnishing can be determined by monitoring measurable
parameters such as the change in the MR resistance (MRR), i.e., MRR/MRR
until a selected range is achieved. The invention can be used to remove an overcoat
from the air-bearing surface of the slider, remove protruding areas from the slider
and to remove debris from the disk surface.