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245 changes: 34 additions & 211 deletions InstallWindows/InstallWindows-SurfaceDuo1.md
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![Surface Duo Dual Screen Windows](https://user-images.githubusercontent.com/3755345/170788230-a42e624a-d2ed-4070-b289-a9b34774bcd0.png)

## Files/Tools Needed 📃

- TWRP image: [surfaceduo1-twrp.img](https://github.com/WOA-Project/SurfaceDuo-Guides/raw/main/InstallWindows/Files/surfaceduo1-twrp.img)
- Mass Storage Shell Script: [msc.tar](https://github.com/WOA-Project/SurfaceDuo-Guides/raw/main/InstallWindows/Files/msc.tar)
- Windows UEFI: [Surface.Duo.1st.Gen.UEFI.Fast.Boot.zip/uefi.img](https://github.com/WOA-Project/SurfaceDuoPkg/releases/)
- [Platform Tools from Google (ADB and Fastboot)](https://developer.android.com/studio/releases/platform-tools)
- An ARM64 Windows build of your choice that meets the minimum system requirements (specifically the install.wim file). You can use [UUPMediaCreator](https://github.com/gus33000/UUPMediaCreator) for this. [Here's a guide on how to use it.](https://github.com/WOA-Project/SurfaceDuo-Guides/blob/main/InstallWindows/ISO/GetWindows.md)
- The driver set: [SurfaceDuo-Drivers-2XXX.XX-Desktop-Epsilon.zip](https://github.com/WOA-Project/SurfaceDuo-Drivers/releases/)
- DriverUpdater, to install the driver set: [DriverUpdater](https://github.com/WOA-Project/DriverUpdater/releases/)
- A Windows PC to build the Windows ISO, apply it onto the phone from mass storage, add drivers to the installation, configure ESP

> [!WARNING]
> - Don't create partitions from Mass Storage Mode on Windows (because ABL will break with blank/spaces in names), your phone may be irrecoverable otherwise
> - If you see a warning and/or error during the process, it is not normal. Contact us on telegram if you see anything odd, but do not continue or proceed on your own, you will break things further.
> - Don't rerun the commands if you interrupt the process. You may break your partition table.
> - Do not run all commands at once.
> - Do not commit *any* typo with *any* commands.
> - Be familiar with command line interfaces.
> - When using TWRP, it is normal and expected for the phone to be detected as a Xiaomi phone and for touch to not work.
> [!IMPORTANT]
> **THIS WILL WIPE ALL YOUR ANDROID™ DATA**
>
> We don't take any responsibility for any damage done to your phone. By following this guide, you agree to take full responsibility of your actions. We have done some testing,
>
> but this is **STILL IN PREVIEW** and things can go wrong.
**PLEASE READ AND BE SURE TO UNDERSTAND THE ENTIRE GUIDE BEFORE STARTING**

## What you will get 🛒

You will end up with both Android™ and Windows on your Surface Duo. Android™ and Windows will both split the internal storage (64GB and 64GB or 128GB and 128GB).

Android™ will boot normally, and you will have to use a PC to boot Windows when needed, unless you create a dual boot image (explained later).

# Steps 🛠️

## Unlocking the Bootloader

If not already done, please first proceed with the [Unlocking the Bootloader](UnlockingBootloader-SurfaceDuo1.md) guide for Surface Duo (1st Gen). Come back once you're done. If you already followed this guide, please skip the unlocking section.

## Partitioning

If not already done, please proceed with the [Partitioning](Partitioning-SurfaceDuo1.md) guide for Surface Duo (1st Gen). Come back once you're done. If you already followed this guide, please instead follow the [Reinstall Windows](ReinstallWindows-SurfaceDuo1.md) guide, not this one.

## Getting to Mass Storage Mode

- Reboot into the Bootloader mode by running this command while inside Android™:

```batch
adb reboot bootloader
```

![Surface Duo in Bootloader mode](https://github.com/WOA-Project/SurfaceDuo-Guides/assets/3755345/eb19d500-4849-4ded-bd0c-894e4ac56486)
_Image of what you should see right now: Surface Duo in Bootloader mode_

Start by booting TWRP:

- Plug your phone to your PC, open a command prompt and start by typing the following text, but do not press enter just yet

```batch
fastboot boot
```

![image](https://github.com/WOA-Project/SurfaceDuo-Guides/assets/3755345/24c5ed51-4710-449d-a5dc-686f8da8ea47)

- Go find the surfaceduo1-twrp.img file you downloaded earlier, right click it, click "Copy as path"

![image](https://github.com/WOA-Project/SurfaceDuo-Guides/assets/3755345/3e8db3d5-44d0-4e6c-a7ef-674f86e82650)

- Then go back to the Command Prompt window we started writing text in previously, and simply, right click on it with your mouse (or long press if you're on a touch device), you should now see this:

![image](https://github.com/WOA-Project/SurfaceDuo-Guides/assets/3755345/e97d514b-a314-4faf-9622-75bdab066985)

- Now you can press enter

![image](https://github.com/WOA-Project/SurfaceDuo-Guides/assets/3755345/2e27f24c-5b12-476d-99d8-f11de5baa807)

You will now boot to TWRP. Touch will not be working and the device will say it is locked. This is completely normal.

## Going to Mass Storage

- Let's load the mass storage shell script in order to boot into Mass Storage from TWRP

```batch
adb shell "setenforce 0"
adb push <path to downloaded msc.tar> /sdcard/
adb shell "tar -xf /sdcard/msc.tar -C /sdcard --no-same-owner"
adb shell "sh /sdcard/msc.sh"
```

Surface Duo should now be in USB 3 SuperSpeed (or what the USB-IF currently calls it) Mass Storage Mode.

## Installing Windows

- Make sure you are in Mass Storage Mode, that your Surface Duo is plugged into your PC
- Mount the partitions you have created using diskpart and assign them some letters:

```batch
⚠️ THESE ARE NOT ALL COMMANDS. DISKPART COMMANDS VARY A LOT, SO THESE ARE SOME ROUGH INSTRUCTIONS.
ACTUAL COMMANDS START WITH AN HASHTAG (which you will need to remove)
YOU DO NOT HAVE TO USE THE LETTERS WE USE AT ALL!!!, THEY ONLY NEED TO BE FREE LETTERS. IF LETTERS DON'T ASSIGN FINE, USE ANOTHER ONE.
IF ONE PARTITION IS ALREADY ASSIGNED, YOU ALSO DO NOT NEED TO ASSIGN IT AGAIN IF YOU DONT WANT TO.
# list disk
Find the Surface Duo Disk, and take note of the number.
# select disk <number>
# list partition
You will be able to recognize the partitions we made earlier by their size. take note of the ESP and WIN partition numbers.
# select partition <esp-partition-number>
# assign letter=<THE LETTER YOU WANT AS LONG AS IT IS NOT CURRENTLY IN USE IN FILE EXPLORER FOR ANOTHER DRIVE! (Example: X)>:
# select partition <win-partition-number>
# assign letter=<ANOTHER LETTER YOU WANT AS LONG AS IT IS NOT CURRENTLY IN USE IN FILE EXPLORER FOR ANOTHER DRIVE! (Example: Y)>:
```

- You will have two partitions loaded, one is the ESP partition, and the other is the Win partition. Take note of the letters you've used.

> [!WARNING]
From now on we will assume X: is the Win partition and that Y: is the ESP partition for all the commands. You very very likely used other letters, or have to use other letters. Replace them correctly with what you previously picked or you will lose data on your PC.

- We will need our install.wim file now. If you haven't it already, you can [use this guide](https://github.com/WOA-Project/SurfaceDuo-Guides/blob/main/InstallWindows/ISO/GetWindows.md). When you are ready, run these commands:

```batch
dism /apply-image /ImageFile:"<path to install.wim>" /index:1 /ApplyDir:X:\
```

This will take a bit of time. Go make some coffee ☕ or some tea 🍵.

- Once that is done:

```batch
bcdboot X:\Windows /s Y: /f UEFI
```

Windows is now installed but has no drivers.

## Installing the drivers

- Extract the drivers, Extract driver updater, and from the command prompt in the DriverUpdater.exe directory:

```batch
DriverUpdater.exe -d "<path to extracted drivers>\definitions\Desktop\ARM64\Internal\epsilon.xml" -r "<path to extracted drivers>" -p X:\
```

- Once it is done, you can reboot your phone using ```adb reboot bootloader```. You will be able to boot to Android™ and your phone will work normally. Set it up if you need it.

You will be back into Surface Duo's bootloader.

![Surface Duo in Bootloader mode](https://github.com/WOA-Project/SurfaceDuo-Guides/assets/3755345/eb19d500-4849-4ded-bd0c-894e4ac56486)
_Image of what you should see right now: Surface Duo in Bootloader mode_

## Boot Windows 🚀

We are ready to boot for the first time!

Reboot your device to the Bootloader mode, using adb or from the recovery.

![Surface Duo in Bootloader mode](https://github.com/WOA-Project/SurfaceDuo-Guides/assets/3755345/eb19d500-4849-4ded-bd0c-894e4ac56486)
_Image of what you should see right now: Surface Duo in Bootloader mode_

Let's boot the UEFI, from a command prompt:

```batch
fastboot boot surfaceduo1-uefi.img
```

This step above will be needed every time you will want to boot Windows and needs to be done from the Bootloader mode.

If you did everything right, Windows will now boot! Enjoy!

**Note:** If the Touch keyboard won't show up in OOBE, touch somewhere else (to let the text box loose focus) and then touch into the text box again. As an alternative, you can use the On-Screen Keyboard.

Let Windows set itself up, and come back once you're on the Windows Desktop on your Surface Duo

## Boot Windows again after initial installation

You'll have two methods of booting Windows.

- Manual booting with a PC
- Pros: You can freely update Android™
- Cons: You will need a PC to boot to Windows

- Enabling Dual Boot
- Pros: You'll be able to boot Windows directly from the device
- Cons: Every time you update Android™, you'll have to follow [this guide](https://github.com/WOA-Project/SurfaceDuo-Guides/blob/main/InstallWindows/DualBoot-SurfaceDuo.md)

In case you want the dual boot option, then follow [this guide](https://github.com/WOA-Project/SurfaceDuo-Guides/blob/main/InstallWindows/DualBoot-SurfaceDuo.md)

---
<details>
<summary>In case you want to manually boot each time: (Click to expand)</summary>
<p>

Reboot your device to the Bootloader mode, using adb or from the recovery.

![Surface Duo in Bootloader mode](https://github.com/WOA-Project/SurfaceDuo-Guides/assets/3755345/eb19d500-4849-4ded-bd0c-894e4ac56486)
_Image of what you should see right now: Surface Duo in Bootloader mode_

Let's boot the UEFI, from a command prompt:

```batch
fastboot boot surfaceduo1-uefi.img
```

This step above will be needed every time you will want to boot Windows and needs to be done from the Bootloader mode.

If you did everything right, Windows will now boot! Enjoy!

**Note:** If the Touch keyboard won't show up in OOBE, touch somewhere else (to let the text box loose focus) and then touch into the text box again. As an alternative, you can use the On-Screen Keyboard.
</p>
</details>
There are two methods to install Windows:

<table>
<tr>
<td>
<p align="center">
<a href="https://github.com/WOA-Project/SurfaceDuo-Guides/blob/main/InstallWindows/FlashingFFU-SurfaceDuo1.md"><img src="https://raw.githubusercontent.com/gus33000/UUPMediaCreator/main/Assets/logo.png" width="176"></a><br>
<b>Flash a Full Flash Update (FFU) file</b><br>
<ul>
<li>Easiest</li>
<li>Quickest</li>
<li>Simple</li>
<li>Lack of options in regards to OS version, language, edition, storage allocation</li>
</ul><br>
<br>
<a href="https://github.com/WOA-Project/SurfaceDuo-Guides/blob/main/InstallWindows/FlashingFFU-SurfaceDuo1.md">FFU Guide</a>
</p>
</td>
<td>
<p align="center">
<a href="https://github.com/WOA-Project/SurfaceDuo-Guides/blob/main/InstallWindows/InstallWindowsManually-SurfaceDuo1.md"><img src="https://raw.githubusercontent.com/gus33000/UUPMediaCreator/main/Assets/logo.png" width="176"></a><br>
<b>Install Windows Manually yourself</b><br>
<ul>
<li>Hardest</li>
<li>Longest</li>
<li>Complicated for inexperienced user, and can lead to mistakes breaking the device if done incorrectly</li>
<li>Highly customizable in regards to OS version, language, edition, storage allocation</li>
</ul><br>
<br>
<a href="https://github.com/WOA-Project/SurfaceDuo-Guides/blob/main/InstallWindows/InstallWindowsManually-SurfaceDuo1.md">Manual Guide</a>
</p>
</td>
</tr>
</table>
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