Abstract: The present invention relates to a hard disk drive used as an auxiliary memory of a computer, and more particularly to an a hard disk drive for positioning a voice coil motor, which drives an actuator at which a head of the hard disk drive is installed, at an exterior chamber thereof. A hard disk drive including an actuator being installed in a pivot having an E-shaped block for assembling a head gimbals with a head which reads/writes data from recording media and a voice coil motor for driving the E-shaped block comprises a housing constituted as three end portions, centering around the pivot, a pivot housing installed in the housing to rotate the pivot, the E-shaped block positioned in an inner portion of the housing and assembled in one portion of the pivot to be rotatable, and the voice coil motor positioned in an outer portion of the housing and assembled in the other portion of the pivot, the E-shaped block being rotatable by the voice coil motor.