Paste the following command: sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume Press Enter and provide your admin password. Troubleshooting Common Issues
If you see an error stating "This copy of the Install macOS High Sierra application is damaged," it is likely due to an expired security certificate. You can often bypass this by disconnecting from the internet and manually setting your Mac’s system date to a time closer to 2017 or 2018 using the Terminal command: date 0101010118 . macos high sierra download
Before downloading, ensure your Mac can actually run version 10.13. Generally, the following models are supported: MacBook (Late 2009 or newer) MacBook Air (Late 2010 or newer) MacBook Pro (Mid 2010 or newer) Mac Mini (Mid 2010 or newer) iMac (Late 2009 or newer) Mac Pro (Mid 2010 or newer) Creating a Bootable USB Drive Before downloading, ensure your Mac can actually run
Always remember to back up your data via Time Machine before initiating an OS installation. While High Sierra is an older release, it remains a stable and efficient choice for extending the life of classic Apple hardware. If you'd like, I can help you with the next steps: If you'd like, I can help you with
The file will save to your /Applications folder as "Install macOS High Sierra." System Compatibility