Just got a Dell E7270 for evaluation and trying to OSD our corporate Win7 x86 SOE on it, but when it boots into WinPE (x86 or x64), it doesn't detect any physicals disks. I have enabled command support, so when I press "F8", run diskpart and use the "list disk" in the command window, it states that, "There are no fixed disks to show".
I've injected the Network and SATA drivers into the both boot images and still no luck.
If I let the machine boot into the preloaded factory image (Win 8.1 x64), I can open diskpart and run "list disk" and it shows me the disk info which is a GPT disk and not MBR (I've not dealt with GPT disks before).
Any ideas?