Oops... I accidentally put a space in the "-iso-level" parameter name.
Here is the corrected command...
$ sudo xorriso -as mkisofs -r -V "ISOIMAGE 2.0.1" -cache-inodes -J -l -iso-level 3 -isohybrid-mbr /usr/lib/ISOLINUX/isohdpfx.bin -c isolinux/boot.cat -b isolinux/isolinux.bin -no-emul-boot -boot-load-size 4 -boot-info-table -o "/isotest6/live-cd-2.0.1.iso" .
Oops... I accidentally put a space in the "-iso-level" parameter name.
Here is the corrected command...
$ sudo xorriso -as mkisofs -r -V "ISOIMAGE 2.0.1" -cache-inodes -J -l -iso-level 3 -isohybrid-mbr /usr/lib/ ISOLINUX/ isohdpfx. bin -c isolinux/boot.cat -b isolinux/ isolinux. bin -no-emul-boot -boot-load-size 4 -boot-info-table -o "/isotest6/ live-cd- 2.0.1.iso" .