Though my experience with using Windows drives was mixed. Steam always wanted to re-download Linux versions of games if available, so everytine I switch in between OSes, my download queue gets full. There’s a workaround for forcing Windows versions on Linux Steam though.
I think I need this soon. Can I have it boot straight into Big Picture mode without login? (I don’t use a keyboard until I really need to)
Also, might it be possible to keep the existing partitions so I don’t have to redownload all the games?
Yes and yes and yes.
Though my experience with using Windows drives was mixed. Steam always wanted to re-download Linux versions of games if available, so everytine I switch in between OSes, my download queue gets full. There’s a workaround for forcing Windows versions on Linux Steam though.