As Robert stated, you can under normal circumstances just format and be done with it. If there is some special firmware that came with this HD and "restricts" its operation to only work as SFS, then either this was shipped(label) wrong for again it fits the needs of a special device/equipment. One I can think of are DVR or media drives or maybe CNC machinery setup or unique OS or setup. If you brought this brand new, then return it as having in SFS defeats typical PC setups. But, unless as i stated it's "locked-in" in some way, it can be re-formatted. If this is what happens then return it. It could be some other problem besides SFS causing issue. if you can't use it, return it because too much time passes. Googling states it has Amiga as a setup or simple OS tasks.