Hello everybody, First, many thanks to all for hard work provided, results are there My specs : E6420 / i5 2520M / 4GB / HD3000 / 250 WD blue hdd @Jake Lo : for me, installation following your second link failed for me (install begin but stuck 5 sec after Apple logo, no video) What has work for me is your first link above and yes I'm sure to not have nv card in my laptop. I follow your instructions and all works for me but : * install process failed if "USBBusFix=No" is not set * osx takes 1 min 30 to load, I see the screen login for 1/10 sec and pc turn to hibernate I have to push power button (it is blinking) to keep it from this state, waiting for 30 sec then I can putmy password in login screen. After that, all is right, I have a functional osx Any idea please about this issue ? Thanks and have a nice day