Hi guys, I would like to learn about something. I have a legit Windows 8 Single Language DVD/key and untill new Windows 8.1 arrived, I was using it. After I upgraded my operating system to Windows 8.1, a question come to my mind and I couldn't find a satisfying answer yet. What if I wanted to install my OS as a fresh one. (It seems I need to download whole 8.1 update from beginning if I use my Windows 8 DVD.) Here is; Is there any posibility if I could use my legit Windows 8 Single Language key for Windows 8.1 Single Language DVD (Which is from torrent/MSDN Untouched) while for a clean install. I mean if I enter my key, will it work or should I use that "usb ei.cfg" trick to enter the key after installation. Any help would be great. Thanks for your answer. Good day.