On Friday I used the .dmg from Apple to upgrade my Mac Os X to 10.6.3. This left me with a none booting computer. To be honest, I was aware that this would happen (probably), since Intel Atom support for Mac OS X is broken in the upgrades. So I hunted around for the patched kernel on the web. I used the USB drive that has the installation disc on it to boot into the Mac OS installer. In the utilities menu there is a Terminal, and I could use this to copy the new patched ‘mach_kernel’ (10.3.0) over the top of the Apple kernel 10.6.3 in /Volumes/<volumename>/.
Great – reboot and we were back to normal.
Second thing I tried to do was patch my video drivers so that I could have something other than 800×600 resolution screen. I did this on the original 10.6.0 Snow Leopard but the same patch doesn’t work with the new OS. I managed to cause my machine to freeze up by using the ‘gma_patch’ in ‘aa1.zip’ . Again, I used the Terminal via my Installation USB to delete the two kext files that begin ‘ea27’ from /Volumes/<volumename>/System/Library/Extensions.
rm -r /Volumes/<volumename>/System/Library/Extensions/27aeAppleIntelIntegratedFramebuffer.kext
rm -r /Volumes/<volumename>/System/Library/Extensions/27aeAppleIntelGMA950.kext
UPDATE: just spotted this sleep enabler but not had chance to try it out.