Software > Utility Software > EFI Mounter v1.2.3
A small utility that mounts an EFI partition on the selected hard drive or USB flash drive. This is a simple wrapper for the terminal’s diskutil command plus a Graphical User Interface.

Download: EFI Mounter | EFI Mounter v2 | EFI Mounter v3
Mirror: insanelymac.com
Substitute: Clover Configurator Pro | ESP Mounter Pro | Terminal
Compatibility: OS X 10.11 and later.