Swapped in an X-25M (latest firmware, not the old one) but it gives me the "The installer cannot prepare the volume for installation. You may need to prepare your disk using Disk Utility". It has a Windows installation on it, but I selected "erase" under options for the target install location. How am I supposed to use Disk Utility when the drive is in the laptop? Can it be accessed via Terminal or something via the install DVD? Help.