--grub2-boot-info --grub2-mbr /usr/lib/grub/i386-pc/boot_hybrid.img -eltorito-boot boot/grubcore.img -no-emul-boot -boot-load-size 4 -boot-info-table --eltorito-catalog boot/grub.cat -eltorito-alt-boot -e boot/grubcore-efi.img -no-emul-boot -isohybrid-gpt-basdat