.EFI

.EFI file extension

This is the basic program to work with .EFI extension

EasyBCD

EasyBCDEasyBCD recovery & stage files

EasyBCD is a bootloader-modification tool with support for Windows, MAC, Linux, and BSD. It lets you setup dual-boot, create bootable USB sticks with repair utilities, and also troubleshoot Windows. This application supports booting into legacy systems that Microsoft doesn't support: MS-DOS, Windows 9x, Windows ME, and Windows 2000... (more)

The program works with the following extensions: nst, bcd, efi and mbr

.EFI extension is also supported by the following program:

EFILive

EFILiveEFILive Data Log