Deploying legacy Windows with Configuration Manager 1702 and Windows ADK 1703

I built some machines to test upgrading from legacy Windows (7 & 8.1) to Windows 10 CB 1073.  I created a standard UDI task sequence that could install Windows 7, 8.1 or 10 and built my first Windows 8.1 system.  Instead of the normal windows setup screen after reboot, this occurred: The disk appeared to…