Scotteq :
It's true you can't upgrade XP from within the OS. You are entitled to use the upgrade (and the discounted pricing). Just that you need to do either a clean or a custom install, in which case all of your XP data will be located in a folder which 7 creates called WINDOWS_OLD.
How does it work then? Imho, Mikeysoft is making it vague and confusing.
What if you have a retail version of XP? It wouldn't bother me if it wiped out my XP as I try to keep my data on a separate drive or I would move any data I still want onto one. But, you're saying a clean or custom install of Windows 7 will retain XP data? How would that work? Sounds kinda messy.
Would you just need the license number and/or XP license code? Then Windows 7 will require it's own code/number to be input or what?
Why do vendors have listings for Windows 7 as REQUIRING Windows Vista Premium or above (if you have Vista Basic, it is stated you have to buy Premium)? That all sounds fishy that you can upgrade Windows 7 with XP and have a full featured Windows 7 system. I've also read that Windows 7 doesn't upgrade XP but installs it in it's own partition so you are stuck with XP on one partition and Windows 7 on the other. That would suck if you didn't want that setup. It also messes with the Windows boot manager quite a bit if that is the case.
Any info to clear this up?
Edit: I might have a clue here. ;-) I am just guessing but the above scenarios are probably for cases in which you want to retain XP and they include steps in order to keep both XP and 7 installed. But, you are saying you just need a legitimate license (in this case, retail), and you just enter the license number of XP sometime during the Windows 7 Upgrade install? So, Windows 7 Upgrade has the full OS but needs a license code number of XP or Vista before you install and then it would probably ask for the Windows 7 license code (which would be in the 7 box someplace (right?) before you can do the full custom/clean install? The main reason to buy this 'Upgrade' is to save money, I bet. If that can be confirmed, then it should clear some confusion up.