MacOS

For macOS versions earlier than 11, the system image needs to be created using: https://github.com/oneclickvirt/macos/blob/main/.github/workflows/build_full_iso.yml

For macOS versions 11 and later (including Tahoe 26), the system image should be created using: https://github.com/oneclickvirt/macos/blob/main/appveyor.yml

Note: CircleCI support has been discontinued. AppVeyor is the only active CI for macOS 11+.

Supported macOS Versions

Version	Name	Build Code	Builder
10.13	High Sierra	17G66	GitHub Actions
10.14	Mojave	18F2059	GitHub Actions
10.15	Catalina	19D2064	GitHub Actions
11	Big Sur	20G1427	AppVeyor
12	Monterey	21H1123	AppVeyor
13	Ventura	22H313	AppVeyor
14	Sonoma	23H311	AppVeyor
15	Sequoia	24C101	AppVeyor
26	Tahoe	26A5247d (beta placeholder)	AppVeyor

Features

• Image Size Optimization:
  • hdiutil compact removes free space from the sparse image before conversion — typically saves several GB.
  • Safe metadata files (.DS_Store, .Spotlight-V100, .fseventsd, .Trashes) are cleaned up without affecting offline installation capability.
  • Final ISO is compressed with 7z LZMA2 (maximum compression).
• Offline Installation: The --downloadassets flag is preserved for macOS 11+, ensuring all required packages are bundled for completely offline installation.

Setup

After forking this repository, set IP and PASSWORD in the AppVeyor project settings (for macOS 11+) or GitHub Actions secrets (for macOS ≤10.15), and the resulting image will be automatically uploaded to /root/macos/ on your server after each build.

Note: The server receiving the image needs at least 120 GB of free disk space.

Thanks to

• https://github.com/corpnewt/gibMacOS
• https://github.com/acidanthera/OpenCorePkg