Comment 17 for bug 1298894

For reference, here is how the current xorriso is configured:

xorriso-1.2.4/xorriso/xorriso -as mkisofs -r -checksum_algorithm_iso md5,sha1 -V Ubuntu\ 14.04\ LTS\ amd64 -o /srv/cdimage.ubuntu.com/scratch/ubuntu/trusty/daily-live/debian-cd/amd64/trusty-desktop-amd64.raw -isohybrid-mbr syslinux/usr/lib/syslinux/isohdpfx.bin -cache-inodes -J -l -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -eltorito-alt-boot -e boot/grub/efi.img -no-emul-boot -isohybrid-gpt-basdat -isohybrid-apm-hfsplus boot1 CD1