I created a Kali Linux Live USB (MBR with compatibility for both BIOS+EFI) and created an /EFI/BOOT directory on the USB's root directory, with the file bootx64.efi in it. However, when I tried to boot into it, it said something about (hd0,1) not being found and that I need to start the kernel first... Any help? If i'm being vague with what I did to make the USB, I followed these instructions: http://forums.kali.org/showthread.php?271-How-to-EFI-install-Kali-Linux
You should go to the partition that says File System, find the boot folder and copy the
grub.cfg file located there to your partition containing /EFI/BOOT/ into that very same folder that you have
bootx64.efi and also from Fedora besides
bootx64.efi. You need everything else from Fedora EFI folder besides the fonts folder. Try again and let me know how it goes.