autoyast=defualt not working

In the isolinux.cfg file I added the following lines: #auto yast label Autoinstall kernel linux append initrd=initrd ramdisk_size=65536 autoyast=default netsetup=0 instmode=cd I then added my autoinst.xml file to the root partition on the DVD (Suse9.1), however I get a error message saying it can't find the control file?? However if I change autoyast=default to autoyast=device://hdc/autoinst.xml it works, however the on some system the DVD-ROM is not hdc.. Matthew