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Ok, well I'm not quite sure how to do that but thank you anyway for your time, i'll do some research! If, by any chance, you're aware of an installation of any Osx that would work on this laptop, I would be happy to be informed. I already tried a few methods (Unibeast, Chameleon) on Lion and...

No the p7450 doesn't have integrated graphics... I only have the gt230m! I've already tried GraphicsEnabler=Yes (is it "Yes" or "Y" by the way?) but combined with other flags (IGPenabler=No), I don't know if it makes any difference?

Thank you for the quick response! I'm actually at step 4. In fact, I haven't managed to modify any options of my Vaio's BIOS, Sony is quite restricting... Maybe that's the problem...?

Hi everyone, I'm trying to get Mavericks up and running on my Vaio VPCCW1S1E/R (2009) with unibeast. I already tried typing a lot of flags combinations but it doesn't seem to get it done... I always end up with either a black screen or a "Waiting for boot device" in verbose mode or a cross...