As I understand it, any Windows 7 edition can be installed from one Windows 7 DVD (assuming you have the right product key). I know I need separate disks for x86 and x64, but what about the full install/upgrade difference? That is to say, if a user has bought a Windows 7 Upgrade, can the installation use any retail x86 Windows 7 disk? -Ryan Adams Free Computer Tips and more:http://RyanTAdams.com Paid Tech Support: Black Diamond

If you bought a Windows 7 Upgrade disk, why would you want to use a different disk?

I provide tech support. During a Microsoft Windows 7 conference, the MS rep was promoting how all the editions could be installed from one image (DVD). Similarly to how Vista was, but even better. I never thought to ask if there was any difference in the discs of "Upgrade" editions from "Full" editions. -Ryan Adams Free Computer Tips and more:http://RyanTAdams.com Paid Tech Support: Black Diamond

I'd look at a few options right now before you get foo far along. One is consider a method to image the hard drive as it is. If not hard drive then the recovery partition at least. Testing it would be nice too. Second is to study up on your model's recovery scheme. It most likely have been looked at by others and may have ways to use the data on your new install. Consider junking the whole disk and putting W7 on it. Use Open sourced apps like openoffice to fill in for your OEM software that may have been included. "Can I upgrade from a 32-bit version of Windows to a 64-bit version of Windows or a 64-bit version of Windows to a 32-bit version of Windows? No. If you are currently running a 32-bit version of Windows, you can only perform an upgrade to another 32-bit version of Windows. Similarly, if you are running a 64-bit version of Windows, you can only perform an upgrade to another 64-bit version of Windows. If you want to move from a 32-bit version of Windows to a 64-bit version of Windows or vice versa, you'll need to back up your files and then perform a Custom installation of the version of Windows you want to install. For more information, see Installing and reinstalling Windows‍. " From http://windows.microsoft.com/en-us/... Playing to the angels Les Paul (1915-2009)

@jefro: I'm thinking you posted a reply to the wrong thread... -Ryan Adams Free Computer Tips and more:http://RyanTAdams.com Paid Tech Support: Black Diamond

If this is true, then I can buy the Home Premium version (full retail), buy a retail key for Ultimate, and use the same disk to install Ultimate onto another computer? Sounds too good to be true.

That's how it was in Vista. It looks like you have to remove one file (ei.cfg) from the disk, and then you will be prompted for which edition to install (like Vista did), however I am trying to confirm this. -Ryan Adams Free Computer Tips and more:http://RyanTAdams.com Paid Tech Support: Black Diamond