unmounting my drive for Clonezilla Server

[KompNupe10]

Been working on setting up an Imaging Server using Clonezilla and DRBL on Ubuntu 9.10.. Definitely wasn't as easy as all the tutorials make it out to be.. Everything is working semi-smoothly now.

However, here's the issue:
-The client PXE boots perfectly, and loads the clonezilla util.
-I can then go through the normal Q&A > Restore an Image > Choose the image located on the server> etc.
-The image i want to use, located on the server in /home/partimag appears as an option
-Once i choose the image i want to restore the client disk to, this appears "Error! No unmounted disks are found! To use Clonezilla to save or clone a disk, the source disk must be unmounted!"

The client drive is a freshy formated hd but i don't know how i can unmount the hd so that clonezilla can image it. Does anyone have any knowledge of Clonezilla or anything of the like?

Thanks in advance for your help!

[KompNupe10]

Also, I know that one limitation with Clonezilla is that the drives must be unmounted to be saved or cloned, I've read that on the net 1000 times. But with Zilla SE, that seems impossible or it seems like that should be automated...