Thanks freebsd!
Now I hust have a little bit of a problem...
I found a tool called linuxconf. I tried to mount hdb5 in there, cos only root had permissions to do something in this directory.
Well, no such luck!
I tried to chmod it, and chmod tells me it did it, but at the end nobody has any rights on it.
So, what can I do to get this thing to work for my standard user?