Quote Originally Posted by McGyver
... ok I did it with qtparted instead of cfdisk and now I have set it to jfs, but cfdisk still shows me nothing than Linux for hda3 is this ok?
That's probably ok, IIRC cfdisk says nothing more for me either. You could check with "sudo fdisk -l" but it should work. I take it you clicked "commit" in qtparted and formatted the partition.

I think I will not need more than the 2,5 GB because I do not need something like open office because the only purpose will be a file server for linux clients and a samba for backup or so.
Should be enough for that. I have a Kanotix install as an ssh server and the root takes up ~1,2 GB and I could still remove a lot, like the X-server.