Hello,
Sorry didn't have a chance to try it for one week,
The problem is whenever I try to use the first command

mkisofs -R /mnt/knx/KNOPPIX | create_compressed_fs - 65536 > /mnt/knx/NewCD/KNOPPIX/KNOPPIX.

it makes an empty file in /mnt/knx/NewCD/KNOPPIX/KNOPPIX

second command works after it creates an 8MB iso file.

Maybe i don't understand something, doing something wrong. Very new in this thing.

Thanks

Nikolay