Use the createinstallmedia command to flash the installer to the image. Unmount and convert the file to .iso format. 3. Third-Party Mirrors

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Before installing, ensure your Mac supports Mojave. Minimum requirements include and 12.5GB of storage . macOS Mojave - App Store - Apple

Verify that EFI is explicitly enabled in your virtual machine system settings. If using VirtualBox, double-check that you executed the command prompt configuration scripts accurately without typos.