The method of the invention is performed on a disk drive with at least a rotatable disk and a head/arm mechanism movable thereover. The disk has a plurality of concentric tracks, including innermost and outermost tracks and an intermediate track positioned therebetween, with the intermediate track including...http://www.google.fr/patents/US5083229?utm_source=gb-gplus-shareBrevet US5083229 - Disk drive with minimized head-arm excursions
