Honestly, thanks for the help ArtPog and ko888, but I may just hold off on copying the files, and just save the hard drive for a future PC upgrade/build, since my current PC is a pre-built by Ironside with a mini-ITX inside.
As of right now, I'm trying to replace/clone my old hard drive with my new hard drive. I've been following this guide: https://www.howtogeek.com/199068/how-to-upgrade-your-existing-hard-drive-in-under-an-hour/
Cloning software used: Macrium Reflect, just like in the guide
Everything seemed...