Ghost Solution Suite 11.5 problem selecting 1.5 terabyte drive

I have a 1.5 terabyte drive that shows up in the list of drives available for creating or restoring an image. However that drive is dimmed or greyed out and not selectable. It is a sata drive. If I put in a 250gig drive that works fine. I am using Ghost Windows PE to boot and launch.
Any ideas or recommendations?