One embodiment of the present invention is a small form factor disk drive for use in an appliance, which disk drive includes: a connector side, a removal side, and gripping sides; wherein the gripping sides include gripping mechanisms that are disposed along the gripping sides so that the gripping mechanisms are exposed whenever the appliance ejects the disk drive. In one embodiment, an interlock member may inhibit installation of one circuit board assembly until another circuit board assembly has been fully installed in a chassis. The second section can be coupled to the first section and comprising at least one protrusion configured and dimensioned to mate with the slot to facilitate movement of the first section. Moreover, the second region extends from the gate trench to the drain access trench and is self-aligned to both the gate trench and the drain access trench.