The EFI partition on your target drive might not be unmounted or properly formatted. Open Disk Utility , ensure your drive is formatted as GUID Partition Map, and try manually mounting the EFI partition using a tool like Clover Configurator before running MultiBeast again. Issue 2: Booting to a Black Screen
Once MultiBeast displays the "Install Succeeded" message, perform the following steps to test your system: Eject your installation USB drive completely. Restart your computer and enter your motherboard's BIOS.
Run the MultiBeast application from your macOS desktop.
Even with an automated tool, post-installation can occasionally present hurdles. Below are standard troubleshooting scenarios for Mojave installations. Issue 1: "Installation Failed" Error