I just setup a new server with Server 2012 to run MDT. The server has WDS installed on it for PXE booting. I have both 32 and 64bit boot images. In WDS properties, I have the 64bit image selected under Boot - Default boot image (optional). When I try to start MDT on a laptop it shows that the architecture is X64 but the TFTP Download points to boot\x86\wdsnbp.com on the boot screen. The laptop is capable of running 64bit. Why does it keep defaulting to 32bit?
Also, in my DHCP option, I have the option 067 Bootfile Name set to \Boot\x86\Wdsnbp.com.