At least 14.3GB of available space for the upgrade. 3. Creating ISO and DMG Files
. However, verify the file size (it should be roughly 5GB) and read user reviews for safety. Internet Archive 4. Updating an Existing High Sierra Install download macos high sierra 1013 iso and dmg upd
| File Type | Typical Use | Trusted Archive Source | |-----------|-------------|------------------------| | macOS_High_Sierra_10.13.6.iso | VMware / VirtualBox | Internet Archive (search for "macOS High Sierra ISO") | | InstallMacOSHighSierra.dmg | Upgrade on real Mac | Mr. Macintosh (community trusted) | At least 14