Dual boot into Windows 11 from an SD card on your Steam Deck with my straightforward guide and play games otherwise unavailable on SteamOS.

Installation type Now, you can choose your preferences, such as the language and the installation - we recommend selecting Normal installation. Confirm your choices by clicking on Continue. Do not ...

If Dual boot menu or Choose an operating system screen is missing or not showing on a dual-boot Windows 11/10, then restore it & set a default OS by using this tip.