... there is still problem.
It is not possible to use the /home/knoppix dir in my exports-file. (the same with /ramdisk/home/knoppix)
When i use the rootdir / it works, but it is still not possible to access the ramdisk over nfs.
when i mount the / on the client i can see the /ramdisk dir and can change to the dir but when
i do ls -l: it seems to contain nothing... i'm still confused...