Did you compile your own kernel without Joliet file extensions? If so then you will have to recompile with Joliet file extensions enabled.
If you are using a SuSE kernel then I would be very surprised if it did not have Joliet file extentions enabled.
If your kernel does have Joliet file extensions enabled then it is possible to turn the feature off with the nojoliet parameter of the mount command (see man mount). So one thing that you could do is check /etc/fstab for nojoliet. Also make sure that nojoliet is not specified in the mount command for the CD.
Be prepared. Create a LifeBoat CD.