macOS Installer ISO Builder with GitHub Actions

• Uses GitHub Actions to download official macOS installers directly from Apple servers and create true DVD-format macOS installer ISO files.
• The generated ISOs are compatible with Proxmox VE, QEMU, VirtualBox, and VMware.

📦 Usage

Running the Workflow

1. Fork this repository.

2. Go to the Actions tab in your forked repository.

3. Select the “Build macOS Installer ISO image” workflow.

4. Click the “Run workflow” button.

5. Set the inputs:

   • macOS version – Choose a version (Sequoia, Sonoma, etc.).
   • Specific version (optional) – Enter a version like 15.7.1, or leave blank to use the latest.

6. Click the green “Run workflow” button to start the build.

📥 Downloading the ISO

After the workflow finishes:

1. Open the completed workflow run.
2. Scroll to the Artifacts section at the bottom.
3. Download the ISO artifact (e.g. macOS-Sequoia-15.7.1-ISO).
4. Extract the ZIP file to get the .iso.

Note

By default, the artifact is kept for 3 days. You can change this in the workflow YAML file.

Tip

• For best performance, use a macOS VM on Proxmox VE with iGPU or dGPU passthrough.
• Installing macOS on Proxmox VE with LongQT-sea/OpenCore-ISO is recommended.
• For Intel GVT-d iGPU passthrough, see LongQT-sea/intel-igpu-passthru.