At last! I installed Mountain Lion! But for me works only this one distributive:
Mountain Lion 10.8 Final [Intel]
Motherboard: GA-H61N-USB3-B3-F8
Graphics: Sapphire HD5570 1GB
Still have problems for installing native DSDT for my motherboard from this site. After MultiBeast and DSDT I have always "Still waiting for root device".
Tried everything I can:
-x -v npci=0x2(3)000 PCIRootUID=0/1 GraphicsEnabler=Yes/No and still no positive results. Maybe someone can help to solve this problem?
Update:
Got it! You have to take the above mentioned distributive. There must be no problems in installation. After MultiBeast setup and you will have fully functioning system. There was only one issue in my situation with "Still waiting for root device".
And the problem was in one string in org.chameleon.Boot.plist!
On previous Lion system I have:
<key>Default Partition</key>
<string>hd (0,2)</string>
and also no
<key>GraphicsEnabler</key>
<string>Yes</string>
So. I added in Mountain Lion Boot.plist "Default Partition" and removed "GraphicsEnabler". After this everything work fine! I don't why at this time MultiBeast didn't add parameter Default Partition but for me it was the main issue to my mind.
Maybe for someone this information will be useful. At this moment I have both Mac OS X Mountain Lion and Windows 8 Release Preview.