Installation-guide.md

Windows Installation Guide

This guide is only for devices with working USB!

Please check the Device Support Status.

Download Tools

Download these files to your USB flash drive:

1. Download Windows PE (works only on SDM845)

   20h2pe_new.zip

   Password：1234

2. Download dism++

   Dism++

3. Download Drivers

   Releases · edk2-porting/WOA-Drivers · GitHub

4. Download Windows 10 arm64 iso

   UUP dump

5. Download UEFI

   SDM845: Releases · edk2-porting/edk2-sdm845 · GitHub MSM8998: Releases · edk2-porting/edk2-msm8998 · GitHub

6. Download parted

   parted

7. Create a text file, you may need it to copy-paste commands on the phone

   diskpart
   select disk 0
   list part
   select part 17    # 17 is the number of your ESP partition
   assign letter=Y
   exit
   
   bcdedit /store Y:\efi\microsoft\boot\bcd /set {Default} testsigning on
   bcdedit /store Y:\efi\microsoft\boot\bcd /set {Default} nointegritychecks on
   
   shutdown -s -t 0

Pre-Installation

Some devices may need additional steps. Before you proceed, please check your device page at Devices section.

Create Partitions

Enter TWRP Recovery on your phone and connect it to PC.

Open Command Prompt as Administrator and run:

adb push parted /sdcard/
adb shell

1. Repartition device

   The following partition layout commands is example for OnePlus 6T 128GB. You may need to change the ranges for your own device or your own preferences.

   !> This may damage your device if done wrong. Please use 9008 to restore your device if it becomes bricked accidentally.

   WARNING: Ignore the text after the #, it's just a comment.

   cp /sdcard/parted /sbin/ && chmod 755 /sbin/parted
   umount /data && umount /sdcard
   parted /dev/block/sda
   rm 17                           # remove userdata
   mkpart esp fat32 6559MB 7000MB    # 441 MB
   mkpart pe fat32 7000MB 10000MB    # 3 GB
   mkpart win ntfs 10000MB 70GB      # 61,680 MB ( 61.68 GB )
   mkpart userdata ext4 70GB 125GB   # 56,320 MB ( 56.32 GB )
   set 17 esp on                   # mark as active partition
   quit

2. Format new partitions

   mkfs.fat -F32 -s1 /dev/block/by-name/pe
   mkfs.fat -F32 -s1 /dev/block/by-name/esp
   mkfs.ntfs -f /dev/block/by-name/win
   mke2fs -t ext4 /dev/block/by-name/userdata

3. Mount PE partition as /mnt

   mount /dev/block/by-name/pe /mnt

4. Connect USB flash drive to device's OTG and copy PE

   cp -r /usbstorage/20h2pe_new/* /mnt
   

5. Reboot to system with TWRP

   Try to boot Android first. If it works, Android is ok and we can proceed.

Install Windows

Reboot device to fastboot mode.

1. Boot UEFI

   fastboot boot boot-DEVICE.img

2. Enter Windows PE

   Assign Y letter to your ESP partition:

   diskpart
   select disk 0
   list part
   select part 17    # 17 is the number of your ESP partition
   assign letter=Y
   exit

3. Install Windows ARM64

   Open dism++ and install Windows:

   1. Open File > Apply Image
   2. Select iso where that is located
   3. Select the C:\ root (or D:\ if C:\ is the PE partition), the destination disk where windows will be applied
   4. Check Add Boot
   5. Press OK and wait untill image applied

   Install drivers:

   1. Select new Windows installation on top and click Open session
   2. Enter Drivers section under Control Panel
   3. Click Add and select SDM845 Drivers folder
   4. Wait untill drivers installed

4. Enable Test-Signing mode

   bcdedit /store Y:\efi\microsoft\boot\bcd /set {Default} testsigning on
   bcdedit /store Y:\efi\microsoft\boot\bcd /set {Default} nointegritychecks on

5. Reboot to UEFI again, enjoy your Windows!

   shutdown -s -t 0