Hi RehabMan. I just updated profile. Basically that 17" is running 10.8.2 without a problem. It still is. Everything works, basically once I changed the wifi card. So I decided lets see if I make the jump to mav. I tried a couple days now, and reading your post here...by the way u rock with the insight given by you and others.. The odd part is no problem installing with the mentioned flags i used but, once booting to hd first time i need to use -x which i did not on installer. After reloading all my working stuff, and installing boot loader then it goes dark sometimes, and sometimes just stuck on logo with waiting to load. I forget which non flag make it dark. What is so different with mav. I'm writing this on an sleek 13z dell in mav 10.9.2. Just a couple things need to iron on this one but installed like a charm.