This article provides a comprehensive guide to obtaining the official DMG, creating a bootable USB, and installing the operating system. What is the macOS High Sierra 10.13.6 DMG?
This is the most reliable way to perform a clean install. You need a USB drive with at least of space. On a Mac:
If you plan to run macOS High Sierra in a virtual machine (VMware, VirtualBox, Parallels), you'll need an ISO file rather than a DMG. Here's how to convert your High Sierra DMG to ISO: macos high sierra 10136 dmg install
If the App Store says "Open" but you need to download a new installer, find the existing Install macOS High Sierra.app in your Applications folder and delete it. Restart the App Store, and it should say "Get".
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/HighSierraUSB Use code with caution. Press . This article provides a comprehensive guide to obtaining
The system will download the complete installation package directly from Apple's servers into your Applications directory.
Ensure your Mac supports High Sierra (Late 2009 or later). Storage Space: You need at least of free disk space. You need a USB drive with at least of space
Click and enter your system password. Your Mac will restart to complete the process. Scenario B: Performing a Clean Install (Via Bootable USB)
Installing macOS High Sierra 10.13.6 from a DMG is feasible and sometimes necessary for legacy systems, provided the user carefully verifies the image’s integrity, prepares bootable media correctly, and accounts for certificate expiry. The process is more technical than the standard installer but offers greater control for offline or air-gapped environments. Future work should explore automated validation tools for legacy macOS DMG images.
Download the InstallMacOSX.dmg file from the official Apple Support page. Open the DMG: Double-click the downloaded .dmg file.
This article provides a comprehensive guide to obtaining the official DMG, creating a bootable USB, and installing the operating system. What is the macOS High Sierra 10.13.6 DMG?
This is the most reliable way to perform a clean install. You need a USB drive with at least of space. On a Mac:
If you plan to run macOS High Sierra in a virtual machine (VMware, VirtualBox, Parallels), you'll need an ISO file rather than a DMG. Here's how to convert your High Sierra DMG to ISO:
If the App Store says "Open" but you need to download a new installer, find the existing Install macOS High Sierra.app in your Applications folder and delete it. Restart the App Store, and it should say "Get".
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/HighSierraUSB Use code with caution. Press .
The system will download the complete installation package directly from Apple's servers into your Applications directory.
Ensure your Mac supports High Sierra (Late 2009 or later). Storage Space: You need at least of free disk space.
Click and enter your system password. Your Mac will restart to complete the process. Scenario B: Performing a Clean Install (Via Bootable USB)
Installing macOS High Sierra 10.13.6 from a DMG is feasible and sometimes necessary for legacy systems, provided the user carefully verifies the image’s integrity, prepares bootable media correctly, and accounts for certificate expiry. The process is more technical than the standard installer but offers greater control for offline or air-gapped environments. Future work should explore automated validation tools for legacy macOS DMG images.
Download the InstallMacOSX.dmg file from the official Apple Support page. Open the DMG: Double-click the downloaded .dmg file.