: You can still download the installer via the Apple Support page which will redirect you to the Mac App Store. Creating the ISO (The "Paper" Process)
hdiutil create -o /tmp/HighSierra -size 8g -layout SPUD -fs JHFS+ hdiutil attach /tmp/HighSierra.dmg -noverify -mountpoint /Volumes/InstallHighSierra sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/InstallHighSierra --nointeraction
Relabel the file extension to .iso and move it to your Desktop for easy access: mv /tmp/HighSierra.cdr ~/Desktop/HighSierra.iso Use code with caution. macos high sierra 10136iso
Once you have a verified ISO file, here is how to use it in common scenarios.
The final security update for High Sierra was "Security Update 2020-006" (build 17G14042), released on November 12, 2020. All updates after this date have been exclusively for newer versions of macOS. : You can still download the installer via
Are you planning to install this ISO on a (like VirtualBox or VMware) or a physical Mac ?
Before installing, ensure your machine meets the requirements: 2GB minimum (4GB recommended for stability). Storage: At least 20GB of free space. The final security update for High Sierra was
Important Windows Step: Close VirtualBox and run specific VBoxManage configuration commands via Windows Command Prompt (Admin) to spoof a real Mac motherboard CPU ID. Using VMware