A method for handling media errors during a read operation on a data storage device. In one embodiment of the invention, the re-configurable wireless communication system includes a portable wireless access unit and a Long Range Ethernet network switch that connects to an existing LAN. The variable mismatch layer may be a layer having a strained in-plane lattice constant that substantially matches the unstrained lattice constant of the first layer. The tensive cutting head includes first and second opposing head members, the distance between which is adjustable and which may be driven apart by a cutting member tensioning device.