A disk drive includes a rotatable disk, a read/write head, a head actuator for moving the head, a suspension for connecting the head and the actuator, and a housing for accommodating the disk, the head, the actuator and the suspension. The suspension is provided with a tab, and the housing is provided with an engaging element to come into engagement with the tab. Upon application of an impact to the housing, the head is raised unduly away from the disk. The tab is caught by the engaging element, thereby preventing the head from falling to and colliding with the disk.