In general, you can upgrade any version of Windows Vista and Windows 7 to
Windows 7 Enterprise, as long as you aren't changing architectures. That is,
you can't upgrade 32-bit Windows to 64-bit Windows. Windows 7 Ultimate and
Windows 7 Enterprise are the same product, but you should be able to change
Ultimate to Enterprise by performing an upgrade.
There are some issues in activating non-volume-license upgrades of Windows 7
when you do a clean install, but it sound like that's not going to be an
issue for you.
If you have a specific scenario you want to discuss, feel free to contact me
> -----Original Message-----
> From: Technology Discussion at UVM [mailto:[log in to unmask]] On
> Behalf Of Larry Kost
> Sent: Tuesday, October 05, 2010 9:17 AM
> To: [log in to unmask]
> Subject: Windows 7 Upgrade?
> Can someone tell me where to find which versions of Vista and Windows 7
> can be upgraded to Windows 7 Enterprise without doing a clean install? I
> realize that a clean install is generally the best route, but I have
> some "unusual" circumstances which make a clean install less appealing.
> I may come to a clean install in the end, but I would like to try an
> upgrade if it's possible.