Do not download ISOs from unknown file-hosting sites (e.g., “highsierra.iso” from mediafire, mega, or torrents). These are often counterfeit or infected. 5. Step-by-Step: Converting the Official Installer to ISO The standard macOS installer is an .app bundle. To make a bootable ISO for VMs or USB:
softwareupdate --fetch-full-installer --full-installer-version 10.13.6 A Python script that downloads macOS installers directly from Apple’s servers without authentication: macos high sierra 10.13 iso download
open macappstores://apps.apple.com/app/id1246284741?mt=12 Do not download ISOs from unknown file-hosting sites (e