📱 Dual Boot Installation Guide (Android + Windows)

This guide will help you safely set up Windows and Android side-by-side on your device using a modded TWRP recovery.

📋 Prerequisites

Before you begin, ensure your environment meets the following requirements:

Unlocked Bootloader (Mandatory)
At least 50% battery charge
Root Access (Magisk/KSU) installed (required for system switching)
A full backup of critical partitions (persist, modem, and efs) stored safely on outside of phone memory
A host machine (PC or secondary Android device with ADB/Fastboot binaries configured)
A reliable USB data cable

💻 ADB & Fastboot Setup

If your host machine isn't configured yet, choose your platform below to set up your flashing environment:

🪟 Method A: Using a Windows PC

Download the official Google Platform Tools for Windows.
Extract the contents of the ZIP folder to an easy-to-reach location (e.g., C:\platform-tools).
Open Windows Terminal or Command Prompt and navigate to your folder:

cd C:\platform-tools

Driver Note: If your phone shows up with a yellow warning triangle in Device Manager while in Fastboot mode, download and install the official
Google USB Drivers

📱 Method B: Using Another Android Phone (OTG)

You can flash your device using a secondary Android phone via a USB-OTG adapter.

Install: Bugjaeger Mobile ADB - USB OTG from the Google Play Store.
Connect both phones using a USB cable and Plug the OTG adapter into the host phone
Launch Bugjaeger - Accept the USB permission prompt
Go to Fastboot section- Open the Commands tab (terminal icon) to run ADB/Fastboot commands

📦 1. Partitioning

Click to expand partitioning steps

⚠️ Warning: The partitioning script will shrink your internal storage and all data will be wiped. Make sure you have already backed up your important data and critical partitions (modem, persist, and efs) outside of your phone's internal memory.

Download Required Files:

On your host PC/device: Download the Modded-TWRP.zip
On your target device (lisa): Download the latest Magisk.apk - skip if already rooted

Boot into Modded TWRP:

Power off your target device. Press and hold Power + Volume Down to enter Fastboot mode.
Connect the device to your host PC/Phone.
On host PC/Phone, execute the following command (if using Bugjaeger, use the app's native Fastboot flash interface):

fastboot boot modded-twrp.img

Execute the Partitioning Script:

In TWRP, tap on Install - select Magisk and swipe to flash - Skip if already rooted
Navigate to Advanced ➔ Terminal inside TWRP.
Start the partition script by typing:

partition

Follow the prompt instructions to allocate your desired storage size (in GB).

Initialize Android:

Once the operation is complete, reboot into System to let Android re-map the adjusted storage spaces.
Download and install the magisk apk or your previously root apk.

🪟 2. Windows Installation

Click to expand Windows installation steps

Prepare Installation Packages:
- Download the Windows-Image
- Download the WinInstaller.zip
- 📂 Both the files should be either in MicroSD Card or in the Internal storage of your Phone Memory .
**Flash the Windows: **
- Reboot your device back into the **modded TWRP **.
- Go to Install, locate and select WinInstaller.zip, then swipe to flash.
- Let the installer run completely. Once finished, reboot the device to system.
Complete Windows Setup:
- The device will boot into the Windows (OOBE).
- Skip to connect the Internet and choose I don't have internet
- Complete the initial region, keyboard, and user setup wizard.
Return to Android:
- Once on the Windows desktop, double-click the Android shortcut icon to seamlessly boot back to your Android system.

3. Dual-Boot Setup

Click to expand dual-boot steps

Download and install Woahelper.apk while booted into Android.
Launch the application and grant it Root (Magisk) privileges when prompted.
Tap REBOOT TO WINDOWS whenever you want to switch to Windows.

🛠️ Troubleshooting & Tips

Stuck in a Bootloop? If your device fails to boot after partitioning, go back to TWRP and format the userdata partition (Wipe ➔ Format Data ➔ type yes).
Failed to boot into Windows? Reboot to Fastboot mode, connect your device to your host machine, boot into TWRP, and flash the boot.img located within your /win partition. If it still fails, restore your stock installed Android boot.img.