Abstract: Disclosed is a method for mounting a device such as a spindle rotation motor to a base of a disk drive such as a miniature optical disk drive. In one embodiment, the method employs a tool. More particularly, the method may include mounting the tool to the base. The tool may include first and second substantially parallel surfaces separated by a first distance. The base may include a base surface and a first raised surface, wherein the base surface and the first raised surface are contained in respective, substantially parallel planes that are separated by a second distance. The first surface of the tool may engage the first raised surface of the base when the tool is mounted to the base. The base may also include a base aperture formed through the base surface. This base aperture may be sized to receive a rotation cylinder of the rotation motor. When the rotation cylinder extends through the aperture, the rotation cylinder may engage the second surface of the tool.

Abstract: A positioning apparatus, and associated method, for laterally positioning the head/access arms of a computer mass storage device disk drive relative to the individual storage media disks thereof. The relative lateral positions of the head/access arms and the corresponding disks are determined, and the access arms are laterally translated to permit a merging operation of the various head/access arms and disks of a disk stack to be performed. The head/access arms are positioned by the application of biasing forces which are normal to the longitudinal axes of the access arms to laterally position the access arms without sliding engagement between the positioning apparatus and the access arms.