I've tried to install Mountain Lion on a Dell R720 ESXi host, without getting a working configuration at the end. My host have been enabled with the unlock-all 1.1.0 script. The machine starts up perfectly, boots on ML DVD, I can partition my HD and install Mountain Lion but, at boot time, I get the grey screen with the Apple logo and the boot wheel, turning forever.
I've tried repatching my host and restoring an old OS X VM, with exactly the same behaviour at last.
If any of you is aware of any modification to do in the .vmx or VM, please let me know.
Thanks in advance.