Before you begin, ensure your Mac can run macOS High Sierra. Here are the official hardware requirements:
You will need a USB flash drive with at least of capacity. On a Mac (Recommended)
Follow the on-screen prompts to select your country, keyboard layout, and Wi-Fi network.
Installing High Sierra in the current day requires a mindset shift regarding security.
file, double-click it to mount the disk image and reveal the installer app inside. 2. Basic Installation Open the Installer: Locate "Install macOS High Sierra" in your Applications folder and double-click it. Follow Prompts: and agree to the license terms. Select Disk: macos high sierra 10136 dmg install
Installing an older OS is not as simple as clicking "Update." You generally need a specific installer file (Install macOS High Sierra.app) wrapped inside a disk image (DMG).
Once formatting concludes, close the Disk Utility window to return to the main macOS Utilities menu. Step 5: Install macOS High Sierra 10.13.6
If you encounter any issues during the installation process, here are a few troubleshooting steps to try:
The true significance of High Sierra lies in its introduction of the . This replaced the decades-old HFS+ format, offering modern features like: Before you begin, ensure your Mac can run macOS High Sierra
Obtain the macOS High Sierra 10.13.6 installer. Apple Support officially provides old macOS versions, though you may need to use Safari to download it properly. Part 1: Downloading & Opening the DMG File
A window will appear containing InstallMacOSX.pkg . Double-click this to begin the installation of the app itself.
For an external drive running macOS High Sierra, APFS is recommended if the drive is an SSD. For traditional HDDs, you can safely use HFS+. Using a macOS version older than High Sierra requires HFS+.
Before installing, select Disk Utility to erase your internal drive (choose APFS for SSDs, Mac OS Extended Journaled for HDDs). Install macOS: Close Disk Utility and select Install macOS . Installing High Sierra in the current day requires
A clean install wipes your Mac‘s internal drive and installs a fresh copy of macOS High Sierra. This is perfect if you’re selling your Mac, experiencing persistent system issues, or simply want a fresh start.
Improved graphics performance for UI and applications.
Your Mac will restart to complete the process. Ensure your Mac remains connected to power during this time. 3. Manual Installation (Clean Install)
Click and follow the on-screen instructions to begin the upgrade. 4. Create a Bootable USB (Optional)