How to Install Windows on Steam Deck (Dual Boot Guide 2026) | GamerHardware

To install Windows on Steam Deck, you need a USB drive (16GB+), a Windows 11 ISO, and about 45 minutes. The dual boot method using Clover bootloader lets you keep SteamOS and switch between operating systems at startup – no need to erase anything. This guide walks through every step from partitioning the SSD to installing the right Steam Deck Windows drivers, plus honest performance numbers so you know what to expect before committing. See the full PC gaming troubleshooting guide for deeper context.

A heads-up before you start: Windows on Steam Deck works, but it is not the polished experience SteamOS provides. Driver support has improved since Valve released official drivers, but you lose sleep/resume reliability, TDP controls, and about 10-15% battery life. If your reason for Windows is a specific game with anti-cheat that blocks Linux (Valorant, Destiny 2), or a Windows-only app you need on the go, this guide is for you. If you just want to play Steam games, stay on SteamOS.

What You Need Before Starting

Gather everything first. Getting halfway through and missing a USB hub or driver file means starting over, and the partitioning step cannot be easily undone.

Hardware

• USB-C hub or dock – needs at least one USB-A port for the installer USB drive. Any USB-C hub works. If yours has HDMI, you can connect an external monitor to make the Windows setup easier to navigate.
• USB flash drive (16GB minimum) – USB 3.0 recommended. A USB 2.0 drive works but the install takes twice as long because read speeds bottleneck the file copy.
• USB keyboard – Windows setup needs a keyboard for certain screens. The Steam Deck’s built-in controls do not work during Windows installation. Bluetooth keyboards will not pair until after Windows drivers are installed.
• Power adapter – keep the Deck plugged in throughout. The installation process takes 30-45 minutes and the Deck draws heavy power during disk operations.

Software (Download These First)

• Windows 11 ISO – download from Microsoft’s official page. Pick the 64-bit ISO. The Steam Deck’s AMD APU supports Windows 11 without TPM workarounds.
• Rufus (Windows) or Ventoy (cross-platform) – to create the bootable USB drive. Rufus is simpler if you have a Windows PC. Ventoy lets you drop the ISO onto a USB and boot from it on any machine.
• Steam Deck Windows drivers – download from Valve’s driver page. You need the GPU, WiFi, Bluetooth, SD card reader, and audio drivers. Put these on the USB drive alongside the Windows installer – you will need them immediately after install because Windows has no WiFi without the driver.
• Clover bootloader for Steam Deck – download the latest release from the community GitHub repo. This is what lets you choose between SteamOS and Windows at startup.

Step 1: Create the Bootable USB Drive

Using Rufus (Recommended for Windows Users)

1. Open Rufus on your Windows PC
2. Select your USB drive under Device
3. Click SELECT and choose the Windows 11 ISO
4. Set Partition scheme to GPT and Target system to UEFI (non-CSM)
5. Click START. When prompted, select “Remove requirement for 4GB+ RAM, Secure Boot and TPM 2.0” – this bypasses Microsoft’s hardware checks that the Steam Deck technically fails
6. Wait for the write to complete (5-10 minutes on USB 3.0)

Using Ventoy (Works on Any OS)

1. Install Ventoy to your USB drive (this formats the drive)
2. Copy the Windows 11 ISO directly onto the USB drive’s file system
3. Copy the Steam Deck driver ZIP files onto the same USB drive
4. Boot from the USB and Ventoy presents a menu where you select the ISO

After creating the bootable USB, create a folder called SteamDeckDrivers on the USB drive and copy all the Valve driver files into it. You will install these from the USB after Windows is set up because the Deck has no WiFi in Windows until the driver is loaded.

Step 2: Partition the Steam Deck’s SSD

This is the step that scares most people, and for good reason – messing up partitioning can wipe your SteamOS installation. Follow these instructions exactly.

Resize from Desktop Mode

1. On your Steam Deck, switch to Desktop Mode (Steam button > Power > Switch to Desktop)
2. Open the KDE Partition Manager from the application menu (System > KDE Partition Manager)
3. Find the main SteamOS partition – it is the largest ext4 partition, typically /dev/nvme0n1p8 on newer firmware
4. Right-click the partition and select Resize/Move
5. Shrink it by the amount you want for Windows. Minimum 80GB for Windows + a few games. 120GB is more comfortable. 200GB+ if you plan to install multiple large titles.
6. The freed space appears as Unallocated – leave it unallocated. Windows installer will format it during setup.
7. Click Apply. This takes 2-10 minutes depending on how much data needs to be moved.

Do not create an NTFS partition in KDE Partition Manager. Let the Windows installer handle formatting. Creating the partition beforehand sometimes causes boot issues because Windows expects to set its own partition flags.

Backup Warning

There is no undo button for partition resizing. If your Steam Deck has saves that are not synced to Steam Cloud, back them up to a microSD card first. Go to Desktop Mode, open the file manager, and copy your save files from ~/.local/share/Steam/steamapps/compatdata/ to external storage. Most modern Steam games use Steam Cloud automatically, but older titles and non-Steam games do not.

Step 3: Boot from USB and Install Windows

Booting from the USB Drive

1. Plug the USB drive into your USB-C hub. Connect the hub to the Steam Deck.
2. Power off the Steam Deck completely (hold power button > Shutdown)
3. Hold Volume Down + Power until you hear a chime. This opens the BIOS boot menu.
4. Select your USB drive from the boot device list. It shows up as “EFI USB Device” or with the drive’s brand name.
5. The Windows installer loads. This takes 1-3 minutes on USB 3.0.

Running Windows Setup

The screen displays in portrait mode during installation. This is normal – the Steam Deck’s display is natively portrait and SteamOS rotates it. Windows does the same after drivers are installed.

1. Select your language, time, and keyboard layout. Click Install Now.
2. When asked for a product key, click “I don’t have a product key”. You can activate later. Windows 11 runs without activation – you lose personalization options but everything else works.
3. Select Windows 11 Pro (or Home if you prefer). Pro gives you BitLocker and Remote Desktop, which are handy on a portable device.
4. Accept the license terms.
5. Choose “Custom: Install Windows only” – not the upgrade option.
6. On the drive selection screen, select the Unallocated Space you created earlier. Do NOT touch any existing partitions. Identify it by size – it matches exactly what you freed up in KDE Partition Manager.
7. Click New, then Apply, then Next. Windows creates its partition and begins copying files.
8. The install takes 10-20 minutes. The Deck reboots several times. Remove the USB drive after the first reboot so it does not loop back to the installer.

After the final reboot, Windows loads the out-of-box experience (OOBE). Complete the setup – create a local account or Microsoft account. Skip the “Let’s connect you to a network” step if prompted (you have no WiFi driver yet). To bypass this on Windows 11 Home, press Shift+F10 to open a command prompt, type oobe\bypassnro, and press Enter. The Deck restarts and lets you continue without internet.

Step 4: Install Steam Deck Windows Drivers

Windows boots with no WiFi, wrong screen rotation, and no audio. This is expected. Everything gets fixed through Valve’s official driver package.

Install Order (This Matters)

Plug your USB drive back in. Open File Explorer and navigate to the SteamDeckDrivers folder you created earlier. Install in this order:

1. APU Driver (AMD GPU) – fixes display rotation, enables GPU acceleration, and is a dependency for other drivers. Run the installer, reboot when prompted.
2. WiFi Driver – after reboot, install this next so you can get online for Windows Update. The Steam Deck LCD uses a Realtek chip; the OLED uses a different Qualcomm/Atheros chip. Make sure you download the right one for your model.
3. Bluetooth Driver – enables Bluetooth controllers, headphones, and keyboards.
4. SD Card Reader Driver – lets Windows see microSD cards. Without this driver, the card slot does nothing in Windows.
5. Audio Driver – this one is finicky. On some Steam Deck units, audio only works through speakers, not the headphone jack, until a Windows Update fixes the Realtek codec. If headphone audio fails, check for optional Windows Updates under Settings > Windows Update > Advanced options > Optional updates.

Post-Driver Configuration

After all drivers are installed and you have rebooted:

• Screen rotation: Right-click the desktop > Display settings > set rotation to Landscape. If the APU driver installed correctly, this option appears automatically.
• Display scaling: The 7-inch / 7.4-inch screen at 1280×800 is tiny. Set scaling to 125% in Display settings. Text becomes readable without sacrificing too much screen space.
• Windows Update: Now that WiFi works, run Windows Update. Let it install everything, including optional driver updates. Several Deck-specific fixes come through Windows Update rather than Valve’s driver pack.

Step 5: Set Up Clover Bootloader for Dual Boot

Without a boot manager, the Steam Deck boots directly into whichever OS was installed last – in this case, Windows. To switch between SteamOS and Windows at power-on, install the Clover bootloader.

Installing Clover

1. Boot back into SteamOS by holding Volume Down + Power at startup and selecting the SteamOS boot entry from the BIOS menu
2. Switch to Desktop Mode
3. Open a terminal (Konsole) and download the Clover dual boot script from the community repository
4. Run the install script. It copies Clover’s EFI files to the EFI partition and sets itself as the default boot entry.
5. Reboot. You should see the Clover menu with both SteamOS and Windows as options.

Configuring Clover

• Default OS: Clover defaults to SteamOS and auto-boots after 5 seconds. You can change the timeout or default in the Clover configuration file.
• After SteamOS updates: Valve’s system updates sometimes overwrite the boot entry and skip Clover. If this happens, boot SteamOS from the BIOS menu (Volume Down + Power) and re-run the Clover install script. This is Clover’s biggest annoyance – about 1 in 3 SteamOS updates breaks it.
• Alternative: rEFInd – another boot manager that some users prefer. It has better theme support but the same SteamOS update problem. Pick either one.

Step 6: Optimize Windows for the Steam Deck

Windows works out of the box after drivers, but it runs poorly compared to SteamOS unless you tweak a few things. The Steam Deck’s hardware is designed around SteamOS’s power management, and Windows has none of that built in.

Performance Tweaks

• Power plan: Go to Control Panel > Power Options. Select Balanced. Do not use High Performance – it pins the CPU at max frequency, drains the battery in 90 minutes, and generates unnecessary heat. SteamOS’s TDP controls do not exist in Windows, so Balanced mode is your only built-in power management.
• Disable background apps: Settings > Privacy & security > Background apps. Turn off everything you do not need. Windows runs dozens of background processes that consume 2-3W of power continuously.
• Turn off Windows Search indexing: Open Services (services.msc), find “Windows Search”, set Startup type to Disabled. Indexing hammers the SSD and drains battery for a feature you do not need on a gaming handheld.
• Game Mode: Settings > Gaming > Game Mode. Turn it on. This prioritizes GPU resources for games and reduces background activity during gameplay.

Controller Input in Windows

The Steam Deck’s controls work differently in Windows than SteamOS. Install Steam on the Windows side and enable Steam Input – this maps the Deck’s controls (trackpads, back buttons, gyro) to game-compatible input. Without Steam running, Windows sees the Deck as a basic Xbox controller with limited functionality. The trackpads and gyro will not work outside of Steam.

For non-Steam games and general Windows navigation, install GlosSI (Global System Steam Input) or SWICD (Steam Windows Input Controller Driver). These tools route the Deck’s controls through Steam Input even when Steam is not the active window.

SteamOS vs Windows: Honest Performance Numbers

The internet is full of “Windows on Steam Deck is fine” claims, so here are the real numbers based on community benchmarks and user reports from ProtonDB and Reddit. These are averages across multiple Steam Deck LCD and OLED units.

Windows loses 5-10% FPS in most games due to higher OS overhead and less optimized AMD GPU drivers for the Deck’s custom APU. The battery hit is worse – Windows background services drain 2-3W constantly. Sleep/resume is the deal-breaker for many people. SteamOS suspends and resumes like a Nintendo Switch. Windows sometimes wakes to a black screen, crashes, or drains the battery in sleep mode.

Where Windows Actually Wins

• Game Pass titles – Xbox Game Pass games run natively on Windows. Some work through Proton on SteamOS, but the experience is inconsistent.
• Anti-cheat games – Valorant (Vanguard), Destiny 2, and a few other titles with kernel-level anti-cheat refuse to run on Linux entirely.
• Productivity software – if you need full Microsoft Office, Adobe apps, or other Windows-only tools on the go, there is no Linux equivalent that matches feature-for-feature.
• VR (limited) – SteamVR on Linux is experimental. Windows VR works, though the Deck’s GPU struggles with most VR games.

Common Mistakes to Avoid

Should You Install Windows? A Decision Framework

How to Remove Windows and Reclaim Space

If you decide Windows is not worth the tradeoffs, removing it takes about 10 minutes:

1. Boot into SteamOS Desktop Mode
2. Open KDE Partition Manager
3. Delete the Windows NTFS partition (and any small MSR partition Windows created)
4. Expand the SteamOS ext4 partition to fill the recovered space
5. Uninstall Clover by removing its EFI entry (or leave it – without Windows, it just boots SteamOS directly)
6. Reboot. You are back to a single-OS SteamOS Deck with full SSD space.

Alternatively, if something goes seriously wrong at any point during installation, Valve’s SteamOS Recovery Image can reinstall a fresh SteamOS and wipe the entire drive. Download it from Valve’s support page, write it to a USB with Rufus or Balena Etcher, and boot from it. This is the nuclear option – it erases everything, including Windows and all your SteamOS games.

2026 update: Steam Deck OLED is now the baseline recommendation over the LCD model. Steam Remote Play has improved significantly for in-home streaming.

Frequently Asked Questions

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