If you want to install SteamOS on a Windows PC, use ChimeraOS. To know how to install ChimeraOS on Windows, follow this detailed guide.

6. Allow SteamOS to install on your PC After allowing the SteamOS installation to begin, a terminal will appear on your screen.

If you're doing this on a PC or Mac, install the Samsung Smart Switch app on your computer and then connect your old phone to it via a USB cable.