It’s important to clarify upfront: Apple distributes macOS through the Mac App Store as a .app installer or as a disk image ( .dmg ) for creating bootable USB drives. Any “macOS High Sierra 10.13.6.iso” file you find online is almost certainly unofficial, third-party converted , or potentially malicious.
sudo "$INSTALLER_APP_PATH"/Contents/Resources/createinstallmedia --volume /Volumes/install_build macos high sierra 10136iso
It’s important to clarify upfront: Apple distributes macOS through the Mac App Store as a .app installer or as a disk image ( .dmg ) for creating bootable USB drives. Any “macOS High Sierra 10.13.6.iso” file you find online is almost certainly unofficial, third-party converted , or potentially malicious.
sudo "$INSTALLER_APP_PATH"/Contents/Resources/createinstallmedia --volume /Volumes/install_build