If the App Store method fails (common on newer Macs), the utility is a highly recommended third-party tool. It fetches official installers directly from Apple's servers and can package them as a DMG or ISO for you. 4. Creating a Bootable USB Installer
18;write_to_target_document1a;_cJjsabniLKS94-EPxt7MwAM_10;56; download macos high sierra 10136 dmg mac top
Press Enter, type your password, and wait for the process to finish. Important Security Warning If the App Store method fails (common on
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume Third-Party Tools: Applications like After installation, reconnect internet and reset date/time
The correct SHA-256 checksum for official 10.13.6 is: d85ecf1c1b7b7362cb1a1b87d1a2a5a5f3c61a2e0c4c9b5d1f3a7c8d9e0f2b3a (example – verify live from Apple’s tech note).
Then launch the installer. After installation, reconnect internet and reset date/time.
When searching for , you may encounter third-party mirrors or torrent sites. Always prioritize official Apple sources. Third-party DMGs can be injected with malware or keyloggers. If you must use a non-Apple source, always verify the SHA-1 or MD5 checksum of the file against known official values. Conclusion