The onboard chipset memory of the MyBook Studio needed to be reset. When you remove the metal shielding, you see the circuit board and all of the different components. One of them is two metal prongs, an empty jumper (J6, may be different on your board), sticking out of the circuit board, near the DC power input. By shorting those jumper pins together with a metal screwdriver for 2 seconds (with the drive OFF and the power cord REMOVED!), the board will reset so it can recognize the new drive.