So I can't seem to find a clear answer online to this question, but I think this is possible and legal. I purchased a Windows 7 Home upgrade license for a new build I did last year. Since I have a legal copy of XP I did a clean install and did the registry workaround to activate it. Now, I would like to upgrade my wife's laptop from Vista to Win7 - is this possible with the same upgrade media? I'm assuming you can use the same upgrade disc for as many previous xp and Vista installs as you want, but I can't find this clearly stated anywhere. I don't want to try it and then have to deal with both computers being invalidated.
Has anyone done multiple upgrades with one disc?