Black Screen on Install

[agentej]

I've created an USB following of retail Mountain Lion, using one guide. The problem is that when the load finishes, instead of the install screen, I get a black screen. I have a nVidia 240 GT with 1GB of memory, if that helps.

Thank you very very much.

 

[akkman]

Try booting the USB drive with:

-v PCIRootUID=0 npci=0x3000 GraphicsEnabler=Yes


This worked for me.