I am trying to install Kali 1.04 to a USB hardrive. My current machine is a MacBook 5.3 running a kubuntu based distro on an encrypted hard drive...as well as rEFInd. I was able to get a live USB to boot the install using Universal USB Installer and copying an /EFI/BOOT folder with BOOTX64.efi, grubx64.efi, and a grub.cfg file to the thumbdrive. I was unable to actually boot Kali from this but was able to run the installer, which I wanted to do anyways. Anyways, I used the installer to partition a new USB and install Kali to the new drive as I would in a HDD install, but during the installation, Grub fails to install to "/TARGET/", thus making the drive unbootable for me. Is there anyway I can install grub to the USB drive manually or boot into the installed USB with rEFInd?