Tried to use my dev VM to install 10.10 and after I start the installation and the system reboots, it goes right to the Darwin boot loader screen. I can get to the recovery disk and reset target disk back to 10.9.3 but any attempt to get the startup disk to boot the 10.10 installation simply dumps me to the Darwin boot loader screen. Am I just too early trying to update to 10.10 as a VM?