Windows 10: Retail license W10 upgrade permanent?

I give up.

 

Just a thought.. what if MS uses the same license/key that we used for either Win7/Win8 and then you can't activate both OS's at the same time.

 

I hope that the upgrade will allow for continued use of the previous version of Windows, and that activation will be based on hardware recognition, for either Windows 10 or the old version, therefore allowing dual-booting.

"I hope that the license registration, which identifies a PC based on hardware and registers that hardware on MS servers, will also allow for dual-booting Windows OS' on the one license."

 

I doubt that MS will let anyone use both the new and old OS. You can only use either Win10 or WIn7(in your case) and I doubt you can activate both.

 

Just for the record, I don't think Microsoft will block you from going back to the OS you upgraded from as long as its reinstalled on that same PC it was originally installed on. The one you did the upgrade on. They could easily block (blacklist) your Windows 8.1 product code for the OS you upgraded from, but I don't see them doing it. It would just generate a lot of bad feelings and bad press.

 

I would think that's what they don't want. Upgrade, then reinstall the old OS on new hardware. Retail or not.

 

I agree that you'll be able to go back to the previous OS but I don't see any scenario where you can use the old and new one on the same machine or two different machines.