Only download macOS from Apple directly or via the Mac App Store.
If you’re running a newer macOS (e.g., Ventura or Sonoma), the App Store may say “This version is not compatible.” In that case, use Method 2 or 3.
Apple provides a built-in tool called createinstallmedia . Users can use this command to write the installer to a USB thumb drive (typically 16GB or larger). This effectively creates a physical, offline installer that serves the same purpose as a downloaded DMG.
Only download macOS from Apple directly or via the Mac App Store.
If you’re running a newer macOS (e.g., Ventura or Sonoma), the App Store may say “This version is not compatible.” In that case, use Method 2 or 3.
Apple provides a built-in tool called createinstallmedia . Users can use this command to write the installer to a USB thumb drive (typically 16GB or larger). This effectively creates a physical, offline installer that serves the same purpose as a downloaded DMG.