menuentry 'Don't enter - will kill' {
    set isofile='/boot/iso/blackarchlinux-live-2017.12.11-x86_64.iso'
    loopback loop $isofile
    linux (loop)/blackarch/boot/x86_64/vmlinuz archisodevice=/dev/loop0 archisobasedir=blackarch img_dev=$imgdevpath img_loop=$isofile earlymodules=loop
    initrd (loop)/blackarch/boot/x86_64/archiso.img
}