| 摘要 |
A magnetic disk drive is provided, which decreases the profile or height of the drive itself without reliability degradation, realizing a low-profile and large-capacity magnetic disk drive. The drive comprises: (a) a rotatable magnetic disk around an axis; (b) a spindle motor for rotating the disk; (c) a magnetic head for writing information into the disk and for reading information from the disk; (d) an actuator for positioning the head at a desired position over the disk; (e) a disk enclosure for enclosing the disk, the motor, the head, and the actuator; (f) a circuit board fixed to the enclosure; the board having necessary circuits and necessary electronic elements for controlling operation of the drive; the board having a projecting part located outside a footprint of the enclosure; at least part of the elements being mounted on the projecting part. Preferably, the components mounted on the projecting part of the enclosure are higher than the components mounted on the part of the board that is overlapped with the enclosure. An additional circuit board may be provided over the projecting part of the enclosure.
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