Trouble getting past the first apple screen

[AudioJunk]

hi guys,

 

i have some trouble installing snow leo with this guide:

http://tonymacx86.bl...ac-os-x-on.html

 

i cannot get past the apple screen... i attached some photos with the bootflag recommanded in the guide.

maybe someone can help

 

thanks in advance

 

 

EDIT:

 

forgot to change to ahci

now i get an ebios read error after selecting and conforming to boot from retail dvd...

anyone?

 

EDIT:

what do i do wrong that mostly no one matters to response anything?

please