May contain traces of nut
That's an easy one. How often have you seen Windows installing yet another driver when you plug in a UPD? Because there are a wide variety of UPDs, each requiring its own driver. If the HD/HDR-FOX doesn't have a driver for it, it doesn't work.For example, why are some USB stiks not usable at all?
I will be trialling an Ext2 solution for UPDs shortly.