menuentry "Arch Linux ISO" {
set isofile="/archiso/archlinux.iso"
search --no-floppy --fs-uuid --set=root 4c01b5f0-e659-4de0-b689-bb2bf5d50808
loopback loop ($root)$isofile
linux (loop)/arch/boot/x86_64/vmlinuz-linux \
img_dev=/dev/disk/by-uuid/4c01b5f0-e659-4de0-b689-bb2bf5d50808 \
img_loop=$isofile
initrd (loop)/arch/boot/x86_64/initramfs-linux.img
}