all proccess are running correctly but when i try create iso with this commande

mkisofs -pad -l -r -J -v -V "KNOPPIX" -no-emul-boot -boot-load-size 4 -boot-info-table -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat -hide-rr-moved -o /mnt/hda3/knx/knoppix.iso /mnt/hda2/knx/master

I have this responce
Scanning /mnt/hda2/knx/master
Scanning /mnt/hda2/knx/master/KNOPPIX
Scanning /mnt/hda2/knx/master/KNOPPIX/images
Scanning /mnt/hda2/knx/master/boot
Scanning /mnt/hda2/knx/master/boot/isolinux
mkisofs: Uh oh, I cant find the boot catalog directory 'cdrom/boot/isolinux'!


and i trying with this commande:

mkisofs -pad -l -r -J -v -V "KNOPPIX" -b KNOPPIX/boot.img -c KNOPPIX/boot.cat -hide-rr-moved -o /mnt/hda3/knoppix.iso /mnt/hda2/knx/master

Responce is this :

mkisofs 2.01-unofficial-iconv (i686-pc-linux-gnu)
Scanning /mnt/hda2/knx/master
Scanning /mnt/hda2/knx/master/KNOPPIX
Scanning /mnt/hda2/knx/master/KNOPPIX/images
Scanning /mnt/hda2/knx/master/boot
Scanning /mnt/hda2/knx/master/boot/isolinux
Writing: Initial Padblock Start Block 0
Done with: Initial Padblock Block(s) 16
Writing: Primary Volume Descriptor Start Block 16
Done with: Primary Volume Descriptor Block(s) 1
Writing: Eltorito Volume Descriptor Start Block 17
mkisofs: Uh oh, I cant find the boot image 'KNOPPIX/boot.img' !


Please help me