The Steam Deck has an architectural secret that puts it significantly more secure than practically every other gaming handheld. It has the power of an immutable file system. The concept of an immutable file system is that the core operating system directories are entirely read-only. Valve locks down the operating system cores so that random app installs, script execution, or accidental user terminal blunders can never break or corrupt the boot files. There is an A/B partition safety net, too. SteamOS uses dual system partitions: Partition A and Partition B. When Valve pushes an OS update, it s