Hi, > I have just built a custom Wheezy image that boots off a disc and pen > drive. With secure boot! Was secure boot the reason why you needed the newer xorriso features ? I guess Steve McIntyre is still waiting for an explanation why debian-cd 3.1.13 did not work for you with xorriso-1.2.2: http://lists.debian.org/debian-cd/2013/05/msg00006.html Have a nice day :) Thomas