Abstract: A supplementary disk-enclosure cover configured to shield a hard-disk drive against electromagnetic interference. The supplementary disk-enclosure cover includes a top, and vertical flanges. The top has an outer perimeter and an inner perimeter. The outer perimeter lies about parallel to the inner perimeter. The top is disposed between the outer perimeter and the inner perimeter and has a flattened annular shape. The vertical flanges are attached to and extend down from the outer perimeter of the top at about right angles to the top. The vertical flanges are configured to cover respective gaps between a disk-enclosure cover and a disk-enclosure base to which the disk-enclosure cover is attached. A disk enclosure that includes the supplementary disk-enclosure cover, and a hard-disk drive that includes the disk enclosure are also provided.

Abstract: The present invention provides an improved magnetic disk drive manufacturing method that is to be employed during an interval between magnetic disk drive assembly completion and shipment. In one embodiment, a magnetic disk drive has an interface connector. The magnetic disk drive is retained by a shock absorber so that the interface connector is exposed. A testing side connector mounted on a base plate is connected to the interface connector of the magnetic disk drive that is retained by the shock absorber. A host apparatus transfers a test/adjustment program to the magnetic disk drive via the testing side connector. The magnetic disk drive executes the test/adjustment program.