Valve Enables Windows 11 on Steam Machine, but Blocks Dual-Boot for Now

Q: Valve's own OS is faster, so why is it now helping users install Windows on its new hardware?

Valve is helping users install Windows because openness and compatibility matter more to its hardware strategy than forcing everyone onto the faster OS. SteamOS remains Valve’s preferred platform because it is leaner, more gaming-focused, and often outperforms Windows on similar hardware, especially in battery life and some game benchmarks. But Windows still dominates PC gaming, with the vast majority of Steam users on Windows and Windows 11 alone holding roughly 70% of the gaming market. Supporting Windows lets Valve sell hardware to users who want access to the full PC ecosystem, not just the part that runs well through SteamOS and Proton. The biggest practical reason is software coverage. Proton has made Linux gaming far more viable, but it still cannot solve every case. Some major multiplayer games rely on kernel-level anti-cheat that does not work on Linux, and some titles, launchers, DRM systems, and apps remain Windows-only. Native Windows support also gives direct access to Game Pass through the Xbox app and makes stores like Epic or GOG easier to use. There is also a broader business logic. Valve’s original SteamOS push was partly about reducing dependence on Microsoft, but today Steam is strong enough to be more flexible. By shipping Windows 11 drivers “as-is,” while keeping SteamOS as the default and continuing to improve it, Valve can preserve the open-PC ethos, widen the machine’s appeal, and still argue that its own OS is the better experience for many players.

3 articles · Updated · PCMag · Jul 7

Valve has posted the files needed to install Windows 11 on Steam Machine hardware, letting owners replace SteamOS if they want broader desktop features or Windows-only games.
The release includes graphics, Wi-Fi, Bluetooth and SD card reader drivers, but Wi-Fi is unavailable during setup, so installation requires a USB installer and an Ethernet connection.
Dual-boot is not ready because the SteamOS installer’s dual-boot wizard has not shipped yet, meaning a Windows install wipes the device’s storage and requires users to back up data first.
Valve said it still does not officially support Windows on Steam hardware, leaving troubleshooting largely to community forums even as it preserves the PC-style freedom to install another OS.