to confirm erasing the drive, and wait until it says "Done". 3. System Requirements
Press the button while holding down the Option (Alt) key. Release the key when the Startup Manager screen appears.
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume Use code with caution. Copied to clipboard Follow prompts and enter your admin password when asked. MacBook Pro clean install from USB (macOS High Sierra APFS)
macOS High Sierra is a masterpiece of stability for legacy Macs. By following this guide, you’ll breathe new life into older hardware while keeping your data secure with an authentic Apple installer. macos high sierra download dmg install
If you run into issues during the creation process or installation phases, let me know: What is your Mac? What current version of macOS are you running?
Go to the App Store and download any remaining security updates to bring the system to
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume Use code with caution. Copied to clipboard to confirm erasing the drive, and wait until it says "Done"
This is a frequent error triggered by an expired security certificate embedded in older installers.
This guide provides a comprehensive walkthrough for downloading the macOS High Sierra (10.13) DMG file and performing a clean installation. Whether you are reviving an older Mac or need a reliable environment for specific legacy software, High Sierra remains a stable and popular choice.
If you are using a modern Mac running macOS Catalina, Big Sur, Monterey, or later, the App Store may block you from downloading older versions directly. You can bypass this restriction using the native Terminal application. Open (found in Applications > Utilities ). Type or paste the following command and press Enter : Release the key when the Startup Manager screen appears
Open your browser and go to the official Apple macOS High Sierra Support Page .
Before downloading the installer, ensure your Mac hardware supports macOS High Sierra. 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 Memory: Minimum 2 GB of RAM (4 GB recommended)