sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/HighSierraIso --nointeraction Use code with caution.
There are two primary methods for acquiring this file: building it yourself using official Apple tools or downloading it from a third-party source. The official method is always the safest and most reliable. Macos High Sierra 10.13.6.iso
Official support ended on November 12, 2020 , meaning it no longer receives security updates and is considered obsolete for modern internet use. sudo /Applications/Install\ macOS\ High\ Sierra