A clean, unmodified 10.13.6 DMG should be:
The risk of malware is high, and the convenience is low. If you must get it from a third party, only use well-known Mac admin forums (e.g., MacRumors, GitHub) where users provide verified checksums alongside the download link. Download Mac Os High Sierra 10.13.6 Dmg
: Available through the Mac App Store . This downloads the "Install macOS High Sierra.app" to your Applications folder. A clean, unmodified 10