After installation, immediately install the High Sierra 10.13.6 Combo Update (includes security patches and the final APFS features). Download from Apple’s support site if Software Update doesn’t show it.
Before you install, you need a destination. High Sierra introduced APFS (Apple File System).
Apple hides legacy installers. You cannot find “macOS High Sierra” in the Purchased tab of the App Store anymore unless you downloaded it before. However, Apple still hosts the installer on its official servers via a special link.
Once you have the Install macOS High Sierra.app (or a DMG that extracts to it), verify it hasn’t been tampered with.
If you have a DMG file (e.g., HighSierra.dmg), double-click it to mount, then drag the .app to your Applications folder.
Keep the bootable USB and the DMG you created. If your Mac ever fails to start, you can use the USB to repair or reinstall the OS.
To summarize the macOS High Sierra download DMG install process:
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.
Have you successfully installed High Sierra using this method? Double-check your backup before proceeding – and enjoy one of Apple’s most reliable operating systems.
Need the direct download link? Visit Apple’s official support article HT208969. Or run the terminal command above – it’s Apple-signed and malware-free.
To install macOS High Sierra (10.13), you can download the official installer directly from Apple or use professional utilities like to bypass App Store restrictions on newer Macs. Apple Support 1. Download Options
Depending on your current system, use one of the following methods to get the installer: Official App Store (Compatible Macs): direct App Store link to open the High Sierra page. Click to download the Install macOS High Sierra.app to your Applications folder. Mist Utility (Newer Macs):
Since newer macOS versions often block old App Store downloads, the Mist utility on GitHub
allows you to download official macOS firmwares and installers directly from Apple’s servers regardless of your current version. Apple Support (Manual Downloads):
Apple provides manual downloads for specific updates (like the 10.13.6 Combo Update ) on their Manuals and Downloads Apple Support 2. Create a Bootable USB Installer Once you have the Install macOS High Sierra.app
in your Applications folder, follow these steps to create a bootable drive: Prepare the Drive: Plug in a USB flash drive (at least recommended). Use Disk Utility to erase it, choosing Mac OS Extended (Journaled) format and GUID Partition Map Run Terminal Command: Open Terminal and paste the following command (replace with your USB drive's name):
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume Enter your admin password, type
to confirm erasing the drive, and wait until it says "Done". 3. System Requirements
Before installing, ensure your Mac meets these minimum specs: Apple Support How to: Clean Install macOS High Sierra
To download and install macOS High Sierra , you must use a compatible Mac to obtain the full installer from the Mac App Store . Apple does not provide a standalone
file for High Sierra in the same way it does for older versions like Sierra or El Capitan. Apple Support System Requirements Before proceeding, ensure your Mac is compatible: Apple Support : Late 2009 or newer MacBook Pro : Mid 2010 or newer MacBook Air : Late 2010 or newer : Mid 2010 or newer : Late 2009 or newer : Mid 2010 or newer Minimum Hardware : 2GB of RAM and 14.3GB of available storage. Apple Support 1. Download the Installer Direct Link this Apple Support link . Scroll down and click the link for macOS High Sierra 10.13 to open its page in the App Store. . The download will occur via Software Update or the App Store and place a file named "Install macOS High Sierra" Applications Terminal Method (macOS 10.15+)
: If you are on Catalina or later, you can download it via Terminal using this command:
softwareupdate --fetch-full-installer --full-installer-version 10.13.6 Apple Support 2. Create a Bootable USB Installer
Since High Sierra is often used for clean installs, creating a bootable USB is recommended. Apple Support Community Format USB : Connect a 16GB+ flash drive. Use Disk Utility to format it as Mac OS Extended (Journaled) and name it "MyVolume" Run Terminal Command
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume Enter your admin password and type to confirm. 3. Install macOS High Sierra Create a bootable installer for macOS - Apple Support
Here’s a concise guide covering macOS High Sierra DMG download and installation.
What it is
Before you begin
Obtaining the installer (DMG vs. App Store)
Creating a bootable USB installer from the App Store app
Installing High Sierra
Verifying and troubleshooting
Security and integrity
If you want, I can:
If you want to wipe your drive and start fresh (highly recommended for older machines), don't run the installer from your current desktop. Create a bootable USB drive.
What you need:
The Terminal Command: Connect your USB drive (named "MyVolume" for this example) and open Terminal. Paste this command:
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
Note: You will need to enter your admin password. The terminal will erase the USB drive and make it bootable.
