A method and apparatus for applying adaptive non-linear repeatable runout compensation in a disk drive is provided. In one embodiment, the present invention provides a disk surface having a track written thereon, wherein the track includes repeatable runout. A non-linear converge gain is applied to compensate for the repeatable runout. In one embodiment, the converge gain is based upon an amplitude of a position error signal associated with the repeatable runout at a frequency of rotation of the disk surface (or multiple thereof).