It is not strictly necessary to run MultiBeast. Instead:
- Just copy the EFI folder from USB install disk to EFI partition of Mojave SSD.
- Then make any necessary changes to the CLOVER folder on the Mojave SSD.
For example:
- Copy AppleALC to CLOVER/kexts/Other for audio.
- Run Clover Configurator, open the config.plist, and from SMBIOS section, use the pop-up menu near the bottom right side to select a complete SMBIOS definition (iMac19,1 for example).
If you still run into difficulty, compress and upload the CLOVER folder from either the USB disk or Mojave SSD.