Possible Duplicate:
If I’m performing a an upgrade to Windows 8, do I have to have the previous version installed, or is just having the key enough?
Windows 8 Pro Upgrade but no previous version of Windows installed
I'm considering buying Windows 8 Pro with Upgrade offer. I'm currently using Windows 7.
My question is very simple: Will the installation DVD to be downloaded be able to install Windows 8 from scratch or does it need Windows 7 to be installed?
I'm asking this because I will eventually format my computer and I prefer installing an OS from scratch rather from an existing installation.