I've been following this guide found at http://thetecherra.com/2012/12/11/tutorial-install-windows-8-on-a-mac-via-native-efi/ and I've hit a brick wall when it comes to progress on this. this is the line I'm stuck on: "dism /apply-image /imagefile:C:\sources\install.wim /index:1 /applydir:Y:\" I'm substituting C with the proper letter BTW too. any advice?