thanks,
but I can't write to my hd is because it's in ntfs.

what I want to do is to install knoppix on the external hd (I will make a partition on it just for linuk), but since it is external (firewire hd) I can't boot from it.
so, I wondering/thinking/hoping if I can just boot fron the cd and then continue with the hd as regular.

shimi