+_bootloader_iso: ${CFGROOT} ${ISOROOT} _grub_efi32 _grub_efi64
+ grub-mkimage -p / -O i386-pc-eltorito biosdisk iso9660 normal linux all_video >"$${ISOROOT}/grub.bin"
+ grub-glue-efi -3 "$${CFGROOT}/boot/EFI/BOOT/BOOTIA32.EFI" -6 "$${CFGROOT}/boot/EFI/BOOT/BOOTX64.EFI" >"$${ISOROOT}/efi.img"
+ cp -L "$${CFGROOT}/vmlinuz" "$${CFGROOT}/initrd.img" "$${ISOROOT}"
+ printf '%s\n' "set timeout=10" "default=buster" \
+ "menuentry 'Debian Buster' --id 'buster' {" \
+ "linux '/vmlinuz' boot=live" "initrd '/initrd.img'" "}" \
+ >"$${ISOROOT}/grub.cfg"
+