It maybe is a bit of a standard problem, but my OSX installation doesn't boot up.

I've installed OSX with Iboot and multibeast. In multibeast I chose the installation without DSDT, and that's all i selected. When I try to boot without the Iboot cd in verbose mode, after the fast loading of texts or something, so when the boot actually starts, is the only thing what I see a black screen. Also my hard disk stop working.

Alvast bedankt!

System specs:

Intel core i5 3450


Sapphire Radeon 6870

Thanks in advance!