Yes there is...

You need the Hard Disc Builder program from
http://www.empeg.com/cgi-bin/display.cgi?section=downloads&id=5
Beware it will completly trash any data saved on the attached hard disc...

You should probably read the section about Disk Builder from the drive upgrade FAQ at http://www.riocar.org/modules.php?op=modload&name=Drive_Upgrade&file=index
Specifically "Step 6: Formatting the new drive"