Hi, I burned the weekly testing images (last modified 13-Aug-2012): http://cdimage.debian.org/cdimage/weekly-builds/ia64/iso-cd/debian-testing-ia64-CD-1.iso and http://cdimage.debian.org/cdimage/weekly-builds/ia64/iso-dvd/debian-testing-ia64-DVD-1.iso I could boot them; the El-Torito headers are as expected. Thank you so much :-). Best regards Stephan Schreiber