On my sons computer I want to upgrade from vista home premium to 7 professional. I made a disk with the egi.cfg file deleted. Can I now choose the upgrade option and will it upgrade ok? Should I uprade to 7 home premium and then upgrade from that to professional? Please do not tell me to go to ultimate and put in a loader. I have a legitimate win 7 professional key, and I do not wish to have to worry about the loader being disabled. A clean install is not an option due to the amount of stuff on his desktop. Thanks in advance for any advice.