I have a Dell Studio 1440 (14z) with an NVidia 9400M G, so its using the MCP79 chipset like the first unibody MacBooks. I currently have Lion 10.7 running on it, because 10.7.3 gives me a root device error (never investigated it). I've been working all night to get ML running and heres what I've got. It used to give me "Still Waiting for Root Device..." but I fixed that by replacing AppleACPIPlatform.kext, AppleAHCIPort.kext, IOAHCIFamily.kext, IOACPIFamily.kext and IOPCIfamily.kext with the 10.7 versions. Then it would hang on some Atheros failed to load error, and still waiting for root device, so I deleted IO80211Family.kext as instructed by a different thread. Now I get all the way to the end of the installer boot process, and it hangs at the point in the screenshot. Oddly, booting in safe mode causes a "Still waiting for root device..."? Any ideas? I'd love to have 10.8 to develop some jailbreak tweaks, and Airplay Mirroring is nice too

UPDATE: Restored all ML kexts, and just deleted the IO80211Family.kext, same exact error...only other kexts in SLE is FakeSMC.kext, in Extra folder is a Macbook5,1 SMBIOS, my org.chameleon.boot.plist and my DSDT. Everything else is 100% vanilla. Tried Tonymacx86's Chimera 1.8.0, 1.9.1 and currently Chameleon 2.1svn 1916.