when i try the command it does not boot after making final cd, says CREDATIV file system not found

mkisofs give following output
mkisofs -o /root/my1.iso -b isolinux/isolinux.bin -c isol inux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table /root/gnoppix

Using CREDA000 for /CREDATIV (credativ)
Using KNOPP000.TXT;1 for /root/gnoppix/start/KNOPPIX-FAQ-EN.txt (KNOPPIX-FAQ.tx t)
Using KNOPP001.TXT;1 for /root/gnoppix/start/KNOPPIX-FAQ.txt (knoppix-cheatcode s.txt)
Using GNOME000.JPG;1 for /root/gnoppix/isolinux/images/GNOME-Desktop1024-gnoppi x.jpg (GNOME-Desktop1280-gnoppix.jpg)
Using GNOME001.JPG;1 for /root/gnoppix/isolinux/images/GNOME-Desktop1280-gnoppi x.jpg (GNOME-Desktop640-gnoppix.jpg)
Using GNOME002.JPG;1 for /root/gnoppix/isolinux/images/GNOME-Desktop640-gnoppix .jpg (GNOME-Desktop800-gnoppix.jpg)
Using PROJE000.PDF;1 for /root/gnoppix/credativ/Projektbeispiel_High_availibili ty_Cluster_unter_Linux_001_V01.pdf (Projektbeispiel_Migration_im_Businessbereich _von_Windows_zu_Linux_001_V01.pdf)
Using PROJE001.PDF;1 for /root/gnoppix/credativ/Projektbeispiel_Migration_im_Bu sinessbereich_von_Windows_zu_Linux_001_V01.pdf (Projektbeispiel_Qualitätsicherun g_001_V01.pdf)
Using PROJE002.PDF;1 for /root/gnoppix/credativ/Projektbeispiel_Qualitätsicheru ng_001_V01.pdf (Projektbeispiel_Zeiterfassungs_und_Rabattsystem_m it_Open_Source_ Software_001_V01.pdf)

Size of boot image is 4 sectors -> No emulation
1.53% done, estimate finish Thu Mar 25 14:12:01 2004
3.05% done, estimate finish Thu Mar 25 14:10:56 2004
4.57% done, estimate finish Thu Mar 25 14:11:40 2004
6.09% done, estimate finish Thu Mar 25 14:11:29 2004
7.62% done, estimate finish Thu Mar 25 14:11:35 2004
....
94.38% done, estimate finish Thu Mar 25 14:10:52 2004
95.91% done, estimate finish Thu Mar 25 14:10:53 2004
97.43% done, estimate finish Thu Mar 25 14:10:53 2004
98.95% done, estimate finish Thu Mar 25 14:10:52 2004
Total translation table size: 2048
Total rockridge attributes bytes: 0
Total directory bytes: 14336
Path table size(bytes): 116
Max brk space used 0
328460 extents written (641 Mb)