You Can Turn Your Windows Handheld into a Steam Deck, Here's How

howtogeek.com:

Windows handhelds like the ROG Ally have specs that put the Steam Deck to shame, but are let down by Windows being terrible as a handheld operating system. So, what if you could have the best of both worlds?

Bazzite Brings a SteamOS-Like Experience to Windows Handhelds

Bazzite is a special version of Linux that was designed from the ground up for gaming. It's based on Fedora Linux, and uses the Universal Blue platform to manage, update, and distribute the operating system images.

Bazzite has the Steam client pre-installed as part of the image, and also comes with Lutris—an open game management platform. There are numerous gaming-focused tools and tweaks baked into Bazzite, such as a special CPU scheduler that ensures games always get the highest CPU priority and adds quality of life features such as HDR support for AMD GPUs, which dominate handheld PC gaming right now. Thanks to the inclusion of the Heroic Game Launcher, you can integrate the games you own from different PC storefronts into a single front-end.

Just like SteamOS, Bazzite uses Proton to run Windows games and, as such, the compatibility list is identical. If it works on a Steam Deck, it will likely work on Bazzite. In fact, you can install Bazzite on an actual Steam Deck! There's also a great fallback system in case an update breaks something, since you can always roll back to the previous Bazzite image after an update.

The Bazzite Installation Process

Since Bazzite can be installed on a wide range of handhelds (and laptops and desktops) such as the ROG Ally, Lenovo Legion Go, or any number of handheld PCs with compatible hardware, we can't provide universal installation instructions here. In fact, what I recommend is that you search YouTube for a video of someone installing Bazzite on the exact handheld you have, so that you can see the entire process play out before attempting to install it yourself.

While there are many great video guides to installing Bazzite, here are a few