Ok, I just bought a brand new mitsumi external 3.5" floppy drive usb/hot swappable. Was working great transfered many discs of photos(from sony mavica) to my hard drive. Then the next disc I put in says I need to format the disc. If I format it I loose my pics so I didn't do that. Tried the next disc same thing. Then i tried a disc I had already copied and it tells me the same thing. Whats up with that?!