System/Library/Extensions Doesn't Exist

[Morteo]

Hello,

This is my first install of iDeneb 1.3.

After install, I'm looking at the "No HPETs available" and "Package 0 didn't get an HPET" errors. I've read all over that I should remove the "AppleIntelCPUPowerManagement.kext" file, located in "System/Library/Extensions", but "System/Library/Extensions" does not exist. There is no Extensions folder. "Extensions.mkext" exists, but there is no directory. When I try to remove the Extensions.mkext file, it says that the drive is read-only and I can't delete the file.

Where is the AppleIntelCPUPowerManagement.kext file?

Thanks!