New Mac PRO - Windows 8 Pro Ensure that the disk's controller is enabled in the computer's bios menu

Hello all,

I got a new Mac Pro 2013, and am trying to install windows 8 using the Boot Camp Utility. It creates a 200GB partition, partitioned in FAT. Having done this on my other computers, I usually hit advanced options and then reformat the partition as NTFS. I then install. When i format, I still get this error:

Windows 8 cannot be installed - ensure that the disk's controller is enabled in the computer's bios menu. I'm not sure how to get past this step. I am trying to boot from the windows 8 CD and run setup after I partition the drive. I have the USB key with the apple setup files on it.

What am I missing?