My "guess" no another USB dive will not help. It would only help if the one you currently have is bad.
If you have a owners book or Help available for the FD look up "formats". See what kind of formats it will save data in. With my Line 6 I can save data in 4 or 5 different formats to a SD card. I bet the FD does also, so that Windows or Mac or Linux users can also use the FD product.