For Macs with traditional hard disk drives (HDD) or Fusion Drives, APFS is not enabled by default; these systems continued using HFS+ after the upgrade.
The safest way to get the installer is through official Apple channels, although Apple typically provides a .app file (Install macOS High Sierra.app) rather than a direct .dmg file. 1. Using the Mac App Store (Best Method)
hdiutil attach /tmp/HighSierra.dmg -noverify -mountpoint /Volumes/HighSierra Use code with caution. macos high sierra 10136 dmg full
macOS High Sierra 10.13.6 DMG Full Setup Guide is the final, most stable version of Apple's 14th major operating system release for Macintosh computers. This version introduces the Apple File System (APFS), High Efficiency Video Coding (HEVC), and Metal 2 graphic acceleration. A full macOS High Sierra 10.13.6 DMG file allows system recovery, clean installations, and bootable USB creation for older Mac hardware. Why You Need the macOS High Sierra 10.13.6 DMG File
Launch the application (found in Applications > Utilities ). Type the following command exactly and press Enter : For Macs with traditional hard disk drives (HDD)
At least 14.3 GB of available storage space to perform the upgrade.
(Works on macOS Catalina or newer)
If you are using a newer Mac and need to build a installer for an older machine, use the native command-line tool. Open the application. Paste the following command and press Enter:
Open Terminal and run the following command: sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume Using the Mac App Store (Best Method) hdiutil
: Set up virtual machines on virtualization software platforms or create a Hackintosh environment. Technical Specifications and Requirements Hardware Compatibility