linux.efi/initrd.cpio.xz are dummy files.
These dummy files needs to be replaced by building the Linux Kernel.

1. Follow directions on http://osresearch.net/Building/ to compile the heads kernel and initrd for qemu-system_x86_64
2. Copy the following built files
   (1) initrd.cpio.xz to LinuxBoot/LinuxBinaries/initrd.cpio.xz
   (2) bzimage to LinuxBoot/LinuxBinaries/linux.efi