Once you have the Install macOS High Sierra.app in your Applications folder, you can use a terminal command to create a DMG, or use a tool like to create an image of the installer.
After conversion, you'll find a .dmg file and a .img file. You'll need to rename the .img file to remove the extra file extension (usually .dmg.dmg or similar). macos high sierra dmg
: Open the .pkg file and follow the on-screen instructions to upgrade your Mac to macOS High Sierra. Once you have the Install macOS High Sierra
Although macOS High Sierra reached its official "End of Life" in late 2020, it remains a vital resource for several scenarios: macos high sierra dmg
: Make sure it's formatted to FAT32.