How do I keep Win 7 on a backup drive after upgrading to Win10?

[Windows Central Question]

Keeping Win 7 on a backup drive after upgrading to Win10

Will it be possible to Keep Win 7 on a backup drive after upgrading to Win10. In other words Will Win 7 still be authorized and boot on the second drive after upgrading to Win10 on my main drive.

 

[FAHMI BASSEM]

Re: Keeping Win 7 on a backup drive after upgrading to Win10

Why not dual booting?
It looks like you're planning to upgrade your primary PC