Hard Drive not reading as WBFS
So, here's my situation. I have WBFS Manager 3.0, partitioned my external hard drive (Seagate 500GB -partitioned 200GB for this), clicked format on my H: drive (which happens to be the partition), it says it's formatted, plug it into my Wii, load up the USBloader, opens up and asks to click on an external source, I click on USB hard drive (or whatever it says), it says that there's not a WBFS partition and asks if I want to format a partition, so I click yea, then it says that it can't find a partition.
Is this common? and what do I need to do to fix it?