s about Windows 10
It depends on the setup. Using Windows 10 on a different device is possible if you have the appropriate licensing or activation method.
Only for devices running Windows 7 is this applicable.
You won’t receive a fresh license key; you need to upgrade your current PC to Windows 10.
+1
If your hard drive fails over a year after the upgrade, you likely won’t need to revert to Windows 7 unless specific issues arise.
I don't think so. They likely just change your activation code to W10.
You should find a method to generate your individual ISO using the credentials from your existing Windows 7 or 8.1 setup.