The following is done for specifix for DVD images. Maybe this can also be implemented for FC. greetings, Florian La Roche We ship the Specifix Linux distribution on two CD-ROM images per architecture. If you have a DVD burner and want to create DVD images, we have supplied xdelta version 1 files created from concatenated CD images to a DVD image. To create the DVD image, download the two CD-ROM images and the xdelta for your architecture, and run these two commands: cat specifix-linux-0.23-<arch>-disc1.iso specifix-linux-0.23-<arch>-disc2.iso > spx-merged.tmp xdelta patch specifix-linux-0.23-<arch>-cd-dvd.xdelta spx-merged.tmp specifix-linux-0.23-<arch>-dvd.iso Substitute <arch> for your architecture. Burn the resulting dvd.iso file to a dvd: growisofs -Z /dev/dvd=specifix-linux-0.23-<arch>-dvd.iso If you are not yet running Specifix Linux, and if your distribution does not include xdelta 1, you can get xdelta 1.1.3 from http://sourceforge.net/project/showfiles.php?group_id=6966&package_id=7069