I'd like to make a bootable ISO file from Apple-provided DMG file located under Download macOS using Safari on your Mac from: https://support.apple.com/en-us/HT211683. They provide a DMG file with a pkg file inside which I used
xar -xf on, leading to a:
- Distribution (exec, 9kb)
- InstallMacOSX.pkg (pkg obviously, 6.21 GB)
- Resources folder (650kb)
I'd assume InstallMacOSX.pkg is the most important, so it has these files:
- InstallESD.dmg (6.2 GB)
- Payload (9 MB) (Renaming to .zip un'zips' a Install OS X El Capitan.app file)
How would I utilize 'Payload' and 'InstallESD.dmg' to make a bootable ISO file?
Based off of this guide's end results, and my closest OSX version to this, I get these files:
- .IABootFiles (24.3 MB)
- Install macOS Sierra.app (5.03 GB)
- System (24.3 MB)
Install macOS Sierra.app has: /Contents/SharedSupport/InstallESD.dmg (5.01 GB).