Hi,
I had a similiar problem I think. Since you mentioned Fasstprep, I assume the G-Force has a hard drive controller on it or you have another GVP controller. I did not make progress until I partitioned and formatted the drive on another machine (was actually with OS 3.9 but might have worked with an earlier version). Then put the drive back into the A2000 and used GVP's faast prep programme to confirm the partitions. Hope this helps.