If you possess a valid bootable DMG:
Many professional audio and video plugins that broke in the transition to 64-bit-only Catalina still run perfectly on High Sierra. macos high sierra 10136 dmg
macOS High Sierra 10.13.6 is a point release of Apple’s macOS High Sierra (released 2017–2018 era). A DMG is a common macOS disk image file used to distribute macOS installers, apps, or disk images. If you possess a valid bootable DMG: Many