hoosierdadi

I'm trying to install El Capitan on E5420 and getting the same issues as you were... but I'm not sure exactly how to run this script to fix the issue? I was able to copy the .dsdt and origin folder to get a bootable USB and was able to run the installer. But... I can't get the installed OS to boot, tried -x now working.... I get a panic right after com.apple.xpc.launchhd[1] <Notice>: Extension SDK cache is not present.