I understood you. i just copied the isolinux-folder, because I though I need it to get the original menu. There must be a way to start "gfx" from isolinux, but I have no motivation to deal with this. I will use my own Ubuntu-menu. But how can I set the language in the bootcommand? The F*.txt-files don't help. They are just for the help (after pressing F1). And I cannot find a command like "lang=de" or something. Anyway, this is not important. I will concebtrate on other things.