The Steam Deck changed the game for PC players, opening up a world of portability that was usually reserved for Nintendo fans. Naturally, manufacturers tried to follow suit with Windows-based handhelds and the results are, shall we say, mixed. Now, Valve has released official instructions for installing its SteamOS on devices other than the Steam Deck. Let's dive into how to do it—and whether you should.
I should note up front: This is going to be a nebulous area when it comes to official support from the company that made your handheld. At time of writing, the Lenovo Legion Go S is the only handheld with the "Powered by SteamOS" branding (besides the Steam Deck itself), meaning it's officially supported with a final build. You can install SteamOS on devices like the Legion Go and the ROG Ally, but their support isn't final.
Also, it should go without saying, but we'll say it anyway: If you wipe Windows from your handheld, you won't be able to play Windows-based games that aren't supported via SteamOS. That largely consists of online games that require anti-cheat software, but it's worth checking sites like ProtonDB to make sure your favorite games will work on SteamOS.
So, with the caveats out of the way, what are the upsides? Put (overly) simply, Windows is not designed for handhelds. In fact, under the hood, Windows tends to see your gaming handheld as a laptop. Right down to including things like Microsoft Teams that run in the background, or popping up alert boxes that interrupt your game to inform you of a low battery.
Now that people are able to experiment with SteamOS and Windows on the same hardware, it's becoming clearer that Windows itself is a massive nerf to both frame rate and battery life. Even gaming laptops, which can often last all day for normal work, can struggle to get even a few hours of gameplay while away from a charger. That's why it's so important to tweak your settings for the best battery life.
Gaming handhelds only make this problem worse with a smaller form factor, and thus a smaller battery. In my own experience, I've struggled to get two hours of playing a lightweight game like Stardew Valley from a Windows handheld, while the Steam Deck and even the Switch can get upwards of six hours or more.
Since Windows is primarily designed as a desktop (and secondarily as a tablet) computer, it's also harder to tweak settings using controller inputs. What, exactly, is the controller equivalent of Ctrl+Alt+Delete again? While you can plug in a keyboard to dig around in your handheld's settings, it's just easier to do on SteamOS, since its interface has been built from the ground up for controller input.
At this point, Valve has also shown that running Steam games via the Proton compatibility layer works so well that it's almost seamless. I admit, when the Steam Deck was first announced, I expected games to be broken or perform much worse than their native Windows counterparts. Four hundred hours in Hades II later, though, and it's clear that many games can actually run better on SteamOS than Windows.
Step 1: Download and prepare a SteamOS recovery image USB stick
With all that out of the way, let's get started. To install SteamOS on your gaming handheld, you'll need two things: the SteamOS recovery image and a USB stick (preferably USB-C) with at least 8GB of storage. Make sure anything on that USB stick is properly backed up, because this process will reformat that device.
The Steam Deck recovery image can be found here. It's a little over 3GB, so it might take a little while to download, depending on your connection. While you wait for that, you'll also need a utility to create the recovery USB drive. Valve recommends Rufus for Windows users, and Balena Etcher for Mac or Linux users.
Once the recovery image is downloaded, use whichever tool you chose to write the recovery image to your USB drive. This process should be relatively straightforward. Rufus, for example, will present you with a dropdown to select which drive to write the file to under Device, and under Boot Selection, click Select to pick the recovery image file. Click Start and wait. Reminder: This will wipe the contents of your USB drive.
This part can be a bit tricky, and the exact process will vary depending on which handheld you own. Valve has a breakdown of the steps here for a couple specific devices, like the Legion Go and the ROG Ally. However, other devices like those from MSI or Ayaneo will have their own process.
In general, the steps will usually go something like this:
Reboot to the bios. Similar to how you can hold Del or F2 on a computer while rebooting to get to the bios, your gaming handheld has a similar process. Often it's holding a button like Volume + while pressing the power button, but check your specific device's instructions if that doesn't work.
Navigate to the Secure Boot settings. You may have to poke around for this one. Look for categories like Security, and you may need to switch to an Advanced settings mode or menu to find it. This setting should be called Secure Boot. Change this to Disabled.
Save settings and restart your device. Once you've changed the Secure Boot setting, make sure to save the changes to your bios and restart.
Depending on the device, you might have to use the touchscreen to navigate the bios, or even plug in a keyboard or mouse. Again, Valve has specifics for a couple of devices in the link above, but if you're lost, your device's manufacturer will be your best bet for getting specific instructions.
Step 3: Boot using the SteamOS recovery image
Credit: Eric RavenscraftOnce you've disabled Secure Boot, you can plug the USB stick into your handheld and restart the device. At this point, you should end up at a boot menu that lets you choose which drive to boot to. Once again, this process will sometimes differ by device, so if you're not sure how to get to the boot menu, check your device's documentation.
When you get to the boot menu, select your USB drive with the SteamOS recovery image on it. This will take you to a SteamOS desktop environment. Here, you'll see four shortcuts on the desktop. The one we care about is labeled "Wipe Device & Install SteamOS". Give that a single tap (double-tapping will launch it twice, so be careful).
At this point, you should see a warning that proceeding with this step will erase everything on your device. If you had any important game saves, media, or work files (for some reason) on this device that weren't already backed up, you can still bail on this process and reboot to Windows to save them. This is the point of no return, though. Make sure you're ready before moving forward.
Step 4: Familiarize yourself with your new handheld's quirks
Credit: Eric RavenscraftThe install process won't take too long, and when it's done, your handheld will restart and begin setup as though it's a natural-born Steam Deck. There are a few quirks, though. For example, in my testing on the Legion Go, the device tutorial pointed to the "Steam button" on the bottom-left side, but used the Xbox logo. In reality, the corresponding button was at the top-right, and had a Legion logo. It also pointed to a microSD card slot on the bottom of the device that doesn't exist.
Unless you're using an official "Powered by SteamOS" device, prepare for some awkwardness while using the device. Aside from the tutorial, I found some games I wasn't able to install—pressing "Install" on Doom Eternal simply did nothing, for example—and it took some time to figure out which hardware buttons were mapped to which Steam Deck input.
To my surprise, some things that I expected to be broken worked perfectly when I tested this. The Legion Go is unique in that its controllers can be detached, Joy-Con style, from the handheld. I expected them to be laggy or non-functional when I played with SteamOS, but they worked perfectly during a Hades II run—a game that isn't very forgiving of input lag.
Your mileage can and will vary depending on what games you want to play and what hardware you want to run SteamOS on. Still, as we wait for manufacturers to more officially support SteamOS—or for Microsoft to make a proper handheld of its own—it's exciting to finally be able to have a choice in platform for these devices.
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