Select your main hard drive (usually Macintosh HD) and click (format as APFS). Close Disk Utility and select Install macOS . Final Tips for 2026
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As we move further into 2026, many users still rely on older Mac hardware for development, media production, or simple, stable computing. remains a rock-solid, final supported OS for many 2009–2017 Macs. download macos high sierra 10136 dmg mac top
Download macOS High Sierra 10.13.6 DMG: The Complete Guide for Mac Users
Get the full installer from one of the methods above. Select your main hard drive (usually Macintosh HD)
Apple keeps a secure, signed link for High Sierra 10.13.6 for enterprise and support use. Copy this URL into your browser (do not use a download manager):
Open Safari and go to the macOS High Sierra App Store page . remains a rock-solid, final supported OS for many
Ensure the "Install macOS High Sierra" application is sitting in your Applications folder.
Press . The Terminal will display a progress bar as it fetches the complete installation package from Apple. Once finished, the file will be located in your Applications directory. Converting the Installer App into a DMG File
macOS High Sierra - Technical Specifications - Apple Support
Modernizes data structures on flash and SSD-based storage systems, adding native encryption, crash protection, and fast directory sizing.