Hi Still debating how to go about moving my install of Windows 10 to a different drive. I noticed that my backup software will allow me to clone Windows 10 directly to the other hard drive? That would be easy and quick, but it still doesn't address the registration issue if I want to leave the insider program. I wonder if there is an .ISO file for Windows 8.1 that I could install directly to the new drive and then register with my W8 serial number instead of installing Windows 8 and having to go through the upgrade process twice to get to Windows 10? One last question, what's with the reserving your copy bit? I'm assuming that any time during the next few months I can update my Windows 8 install to Windows 10, whether I reserve a copy before tomorrow or not. Isn't that correct. Mike I found a place to download the Windows 8.1 ISO and I'm downloading it now.