menuentry '[MENUTITLE]' --class [CLASS] {
    set iso_path='/[ISONAME]'
    loopback loop $iso_path
    probe --set=cd_label --label (loop)
    linux (loop)[VMLINUZ] iso-scan/filename=$iso_path inst.stage2=hd:LABEL=$cd_label [OPTIONS]
    initrd (loop)[INITRD]
} 
