Hi everyone guys, I was trying to install mountain lion on a virtual box with the hackboot.iso way but when I select the OSX 10.8 iso and I press enter, it shows me a black screen with nothing. I tried also to boot directly from DVD and also starting it with some commands like -f -v GraphicsEnabler=no it shows me always this black screen.
I created the virtual box with your setting, so I disabled efi and other things. I have an AMD Phenom II X4 965 BE with an ATI 5770 and I'm using windows 8. I pray that someone will help me!