Hello everyone, I have recently upgraded my pc. A friend of mine upgraded his and I bought his old one. So my former PC was pretty old, still got the job done, but barely. When I took over the new PC i also used some of my old parts from my old one. I swapped the PSU and I also hooked up my hard drive and ssd with my old OS. Now I figured I would be able to just boot up my old OS from the bios menu, however when I went to do that, there was no option to do so and I also wasn't able to either in disk management. Everything is setup properly and I can view all 3 drives from my the new drive the computer came with. I'm wondering if its possible to clone or merge my old drive with my new one. I'd like to save my information at the very least and not wipe that drive without doing so.