I had high hopes for GSS and UEFI support but it seems that automation folders do work on a system that is already running Windows 7x64 in UEFI mode. Asking it to reboot to automation just results in it's return to Windows with the console message "Unable to boot to automation".
Using the boot disk creator, I did choose x64 for the processor type on Step 1 and tried both x86 and x64 for the boot media processor type on step 2. The folder was installed by double clicking the executable from the Windows 7 x64 UEFI computer.
I have not yet tried booting it via GSS's built in PXE server. However, we cannot get that to work reliably in our environment due to Infoblox appliances sometimes failing to deliver IP addresses within the PXE boot timeout.
I could script my way around any of these issues if I could just get my computers to boot into WinPE 5 from a UEFI only system without PXE.
Ghost multicast, UEFI, and large images.
It is still not clear if Ghost is even aware of EFI system partitions or if you have to do the manual DISKPART script to recreate one from scratch and perhaps bcdboot.exe to copy the efi system files. While it is workable for us to use Ghost to image just the one partition, it's not a one stop shop and requires custom scripts to get it to work. Our image this year (with the full Adobe Cloud 2014) is around 30GB. It's becomming unsustainable to use peer multicast to push such large images. As GSS doesn't seem to support site servers, I don't see it being able to set up a ghostcast server so that half the bandwidth is not lost on peer multicast. I've been using scripts to shrink the C drive and create recovery partitions to pre-copy the image ahead of time. The copy process is slow but I can do that slowly and the go real fast when it's imaging time. When it's image time, I can then image any number of machines at the same time as they are not using the network for multicast traffic. Prior, with rdeploy, we could do about 30 or so before rdeploy would simply fail with an unexpected network failure.
So far I see no compelling reason to upgrade to GSS over DS 6.9 SP6 (which contains PE4).