: Open Terminal and run the following command. Make sure to replace /path/to/your/dmg with the actual path to your DMG file and /Volumes/yourusb with the actual name of your USB drive.
: Open Disk Utility, select your USB drive, and click on "Erase". Choose "Mac OS Extended (Journaled)" and give it a name. macos high sierra dmg
It no longer receives security updates. Browsers like Chrome and Firefox have dropped support. : Open Terminal and run the following command
The remains a critical file for users maintaining vintage Apple hardware, performing clean reinstalls, or setting up virtual environments. Released in 2017, macOS High Sierra (version 10.13) introduced foundational technologies like the Apple File System (APFS) and Metal 2, which continue to influence modern macOS releases. Why You Might Need a High Sierra DMG in 2026 Choose "Mac OS Extended (Journaled)" and give it a name