hello
like i say before in dsdt is already injected hdef layout 12 for applehda , if u use with "beast" thing hdaenabler for alc887 it don't work, must read, are two way to install mac os x the easy way or the right way, but the right way must read a lot, googling and persistency, if u cpu is a ivy, must use ssdt for power management.
http://Olarila.com/forum/viewtopic.php?f=9&t=1933
good hack