I am also having the same configuration. Lenovo G570 with core i5-2450M. I tried to install mac os x 10.9 mavericks using niresh distro. Everything worked except I couldn't get full resolution, couldn't get any proper kext for intel hd3000. Now I want to try 10.8.4. Can anyone please guide me with the important steps of the installation so that I can get everything working? Did you use [url="http://www.insanelymac.com/forum/topic/279450-why-insanelymac-does-not-support-tonymacx86/"]#####[/url]?