Patent ID: 7119985

Claim:
A hard disk drive, comprising: a housing; a motor mounted to the housing; a disk mounted to the motor, having a hub, and being rotatable relative to the housing; an actuator mounted to the housing and being movable relative to the disk, the actuator having a head for reading data from and writing data to the disk; a cover mounted to the housing for covering the disk and the actuator in the housing, the cover being translucent but not transparent for allowing observation of at least some movement inside the housing of the disk, the hub, and the actuator through the cover during operation of the disk drive; and a flashing device mounted to the housing for making movement inside the housing appear to move at a speed that is less than an actual speed of the movement, such that the flashing device makes the disk, the hub, and the actuator appear to move at speeds that are less than their actual speeds.