v1.0

📋 What the script does

The script automates creating a multiboot USB drive by:

• 🔍 Auto-detecting macOS installers in /Applications
• 📦 Smart partitioning the external disk (one volume per macOS version)
• 🚀 Creating bootable installation media on each partition

🚀 Quick Start

Prerequisites

• macOS (uses diskutil and createinstallmedia)
• Python 3.6+
• macOS installers in /Applications (Download with Mist)
• External USB drive/SSD with enough space (64GB+ recommended)
• Admin privileges (sudo required)

Usage

1. Clone the repository:

git clone https://github.com/gitsawkit/macos_multiboot_creator.git
cd macos_multiboot_creator

2. Connect your external drive

3. Run the script:

sudo python3 main.py

4. Follow the prompts:

• Select target disk
• Confirm disk erasure
• Automatic partitioning and installation

Options

sudo python3 main.py --help

• --debug : Debug mode (detailed logs)
• --app-dir /path/to/installers : Custom installer directory

⚠️ Critical Warning

The selected disk will be COMPLETELY ERASED. Backup all important data before proceeding.

📥 Downloading macOS Installers

1. Download Mist
2. Choose "Installer" (NOT "Firmware") and "Application (.app)" format
3. Select desired macOS version
4. Move the downloaded .app file to /Applications

🐛 Common Issues

• No installers found: Verify .app files are in /Applications
• Permission denied: Use sudo
• No external drive detected: Ensure drive is connected, mounted, and has sufficient free space