xorriso \
    -as mkisofs \
    -iso-level 3 \
    -full-iso9660-filenames \
    -volid "CUSTOM" \
    --grub2-boot-info \
    --grub2-mbr /usr/lib/grub/i386-pc/boot_hybrid.img \
    -eltorito-boot \
        boot/grub/bios.img \
        -no-emul-boot \
        -boot-load-size 4 \
        -boot-info-table \
        --eltorito-catalog boot/grub/boot.cat \
    -output "${HOME}/LIVE_BOOT/live.iso" \
    -graft-points \
        "${HOME}/LIVE_BOOT/image" \
        /boot/grub/bios.img=$HOME/LIVE_BOOT/scratch/bios.img