There seems to be a problem with Clonezilla images: everything later then the clonezilla-live-20130819-raring-i386.iso gives just a 'boot:' screen when it is selected from the sardu boot menu.
(tested with, amongst more, clonezilla-live-20140331-saucy-amd64.iso and clonezilla-live-20140415-trusty-i386.iso).
I hope you find out what goes wrong? To me, it seems the isolinux directory is missing in the ...\SARDU\ISO\isolinux\clonezilla folder, and of course on the stick too. It may be because on the iso, it is called syslinux instead?
Greetings, Juergen