I once had a floppy drive that didn't write. I was puzzled for a while as it in Explorer looked as it all worked. When I wrote something to the floppy Explorer showed the file was there. Then after a reboot there was nothing on the floppy. I replaced the floppy drive with a new one and all worked.
So, it might look stupid, but are you sure you can format? Or is it only Explorer that logically thinks that you format?
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unicorn
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