According to one embodiment, there is provided a hard disk drive including a first recording surface, a second recording surface, a first magnetic head, a first actuator and a second actuator that move the first magnetic head, a second magnetic head, a third actuator and a fourth actuator that move the second magnetic head, a fifth actuator that moves the second actuator and the fourth actuator, a drive circuit that implements at least one of a first mode in which the second actuator and the fourth actuator operate differently from each other or a second mode in which the first and third actuators operate differently from each other, and a controller that controls the drive circuit.

According to one embodiment, there is provided a hard disk drive including a first recording surface, a second recording surface, a first magnetic head, a first actuator and a second actuator that move the first magnetic head, a second magnetic head, a third actuator and a fourth actuator that move the second magnetic head, a fifth actuator that moves the second actuator and the fourth actuator, a drive circuit that implements at least one of a first mode in which the second actuator and the fourth actuator operate differently from each other or a second mode in which the first and third actuators operate differently from each other, and a controller that controls the drive circuit.

According to one embodiment, there is provided a hard disk drive including a first recording surface, a second recording surface, a first magnetic head, a first actuator and a second actuator that move the first magnetic head, a second magnetic head, a third actuator and a fourth actuator that move the second magnetic head, a fifth actuator that moves the second actuator and the fourth actuator, a drive circuit that implements at least one of a first mode in which the second actuator and the fourth actuator operate differently from each other or a second mode in which the first and third actuators operate differently from each other, and a controller that controls the drive circuit.

According to one embodiment, there is provided a hard disk drive including a first recording surface, a second recording surface, a first magnetic head, a first actuator and a second actuator that move the first magnetic head, a second magnetic head, a third actuator and a fourth actuator that move the second magnetic head, a fifth actuator that moves the second actuator and the fourth actuator, a drive circuit that implements at least one of a first mode in which the second actuator and the fourth actuator operate differently from each other or a second mode in which the first and third actuators operate differently from each other, and a controller that controls the drive circuit.

Technology is provided for a storage card adapter. The storage card adapter is used for housing storage cards (e.g., M.2 storage cards), and the storage card adapter can then be inserted into a drive bay. The storage card adapter includes an adapter frame and an adapter cover. The adapter frame includes a pair of guide posts having a ledge upon which one end of a storage card rests when the storage cards are installed in storage card connectors on a printed circuit board installed in the storage card adapter. The adapter cover includes a pair of clamping posts that are aligned to engage with the guide posts when the adapter cover is fully mated with the adapter frame. In this manner, the end of the storage card becomes clamped between the guide post and the clamping post to thereby secure the storage card within the storage card adapter.

Technology is provided for a storage card adapter. The storage card adapter is used for housing storage cards (e.g., M.2 storage cards), and the storage card adapter can then be inserted into a drive bay. The storage card adapter includes an adapter frame and an adapter cover. The adapter frame includes a pair of guide posts having a ledge upon which one end of a storage card rests when the storage cards are installed in storage card connectors on a printed circuit board installed in the storage card adapter. The adapter cover includes a pair of clamping posts that are aligned to engage with the guide posts when the adapter cover is fully mated with the adapter frame. In this manner, the end of the storage card becomes clamped between the guide post and the clamping post to thereby secure the storage card within the storage card adapter.