Disk drive comprising a bistable latch with bi-level grooves and a spring restraining force

1. Field of the Invention A disk drive is disclosed comprising a bistable latch for latching an actuator arm in a latched position. The bistable latch comprises a latch base comprising a first groove and a second groove, wherein a depth of at least part of the first groove is different than a depth of at least part of the second groove. The bistable latch further comprises a latch arm movable with respect to the latch base, the latch arm comprising a guide member interacting with the first and second grooves for guiding the latch arm through a predetermined trajectory. The bistable latch further comprises a spring having a first end connected to the latch base and a second end connected to the latch arm.