How to install Windows 11 on Steam Deck and have dual boot

How to install Windows 11 on Steam Deck and have dual boot

There could be many reasons why you want to install Windows 10 or Windows 11 in Steam Deck, either to find compatibility with some games or even for the familiarity that this operating system gives.

However, messing around to install Windows in Steam Deck It is neither the best option, nor the simplest nor the most recommended, but if you still want, we will give you the procedure.

For this you are going to need elements, additional devices and some other investment, and if that does not stop you, you have the tutorial a little further down, although we already anticipated that you would need more than a user level to understand what you are doing.

In this way, we will try to be as clear as possible to teach you how to install Windows 11 on Steam Deck from an initial Windows bootable USB to the final configuration.

How to install Windows 11 on Steam Deck and have dual boot

Step 1 – Create a bootable Windows USB

We need the Rufus program and also a Windows ISO.

The program allows us to create bootable media for the Windows operating system. You are going to require a Windows computer to create each of the bootable media that we are going to need.

Step 2: Downloading and installing Windows on Steam Deck

After getting the official Windows ISO and opening the Rufus program, we can now connect the USB to create the boot.

  • So you have to plug the USB into the Steam Deck’s Type-C USB hub.
  • Open the bootloader, navigate to the USB and start installing Windows.
  • To get to the bootloader you must press the power button and the volume down button until you hear a beep.
  • Within the boot manager, go to the USB memory and load Windows.
  • Now the idea is that we select dual boot so you don’t lose the original OS SteamOS.

Step 3: update the necessary drivers

You need to download all the official drivers, and use an external drive to copy all the files that need to be installed one by one.

You must install the AMD drivers for the integrated APU, the sound drivers and the connectivity drivers.

Step 4: Dual Booting Windows on Steam Deck

  • We go once more to the bootloader as we did before, choose the USB, and select to completely reinstall SteamOS.
  • Now we need the GParted program on the USB stick.
  • To do this, use Rufus, get the GParted ISO and create a bootable USB.
  • Thanks to this program we can modify the partitions as we want.
  • We go back to the bootloader, access the portrait view and choose the mouse.
  • We are also going to need a keyboard to do the rest of the configuration settings where you should not touch the key mapping, choose the language corresponding to your country and start the GParted user interface.
  • If you have done it right, the program will load a partition manager window where you will have to left click on the corresponding drive and partition it with the “resize/move” option.
  • Now simply allocate the correct amount of storage for each of the partitions.
  • Hit “apply”, then “turn off” and wait for the device to turn off completely. After that you will be able to insert the old Windows USB to start the dual boot.

Final Step: Dual Booting Windows

We go to the bootloader once again, choose Windows USB, then select the partition created in the previous step and start the installation process.

When you’re done, go back to the top where you’ll find instructions for the whole driver issue to get it working perfectly.

If you’ve done it right, the Steam Deck will automatically start in Windows when you turn it on, and if you want to choose SteamOS, you’ll need to enter the bootloader as you did before and select this system.