An actuator latch system of a disk drive to lock an actuator having a swing arm installed at a base member, a voice coil motor coil joined to an end portion of the swing arm, and a magnet facing the voice coil motor coil, including a first and a second latch portion provided at the end portion of the swing arm; a latch lever provided at the base member, the latch lever having a first end portion engaged with the first latch portion when the latch lever pivots a first direction, and a second end portion engaged with the second latch portion when the latch lever pivots a second direction; a projection projecting from an edge of the magnet; and a magnetic latch pin provided at an end portion of the swing arm so that a magnetic force operates between the latch pin and the projection.