xorriso -as mkisofs \
  -iso-level 3 \
  -full-iso9660-filenames \
  -volid "ARCH_CUSTOM" \
  -eltorito-boot isolinux/isolinux.bin \
  -eltorito-catalog isolinux/boot.cat \
  -no-emul-boot -boot-load-size 4 -boot-info-table \
  -isohybrid-mbr ~/custom_iso/iso_root/isolinux/isohdpfx.bin \
  -eltorito-alt-boot \
  -e efi/archiso/efiboot.img \
  -no-emul-boot -isohybrid-gpt-basdat \
  -output ~/custom_iso/archlinux-headless.iso \
  ~/custom_iso/iso_root/