This process is technical and often automated by community scripts. The result is a non-standard ISO—one that may boot on a virtualized Mac environment but rarely on generic PC hardware due to missing drivers for non-Apple chipsets.
hdiutil attach /tmp/HighSierra.dmg -noverify -mountpoint /Volumes/HighSierra macos high sierra 10.13.5.iso
hdiutil detach /Volumes/Install\ macOS\ High\ Sierra This process is technical and often automated by