sharing whole drives

  Just installed Ubuntu 10.10 (very nice) but, as usual, some issues to 
be sorted.

I have two 1TB storage drives which need to be shared via samba. ( 
/media/disk and /media/disk-1 )
disk-1 I am able to share no problem, the other refuses to let me share it.

I suspect this is because /media/disk is actually sda1, and linux thinks 
that designation might be a system drive ( it isn't )

Any easy way around this?

Chris