Possible Duplicate:
Windows 8 Pro Upgrade but no previous version of Windows installed
I recently bought the Windows 8 Pro upgrade pack and updated my current PC from Windows 7. I have the Windows 7 Family Upgrade Pack which allows installation on three PCs (all of which were installed).
I am looking at building a new PC in the coming months and want to transfer the Windows 8 install on the existing PC as a new, clean install on the new PC.
I'm fairly sure that the edition that I bought allows transfer between PCs. However, I have also heard that attempting to install from the upgrade media on a clean PC fails to activate.
How would I go about transferring the license to the new PC?