I bet you'll be removing, recreating partitions. Formatting doesn't do that.
And about the tools for other things like recovery and fixing. Those are in the top posts of this forum.
Bob
HI, i've got a Buffalo HD-Ceu2 250GB up until recently it was working fine but now i cant access it on my computer i've also tried it on another computer with the same result.
Drive shows in my computer but when i click it keeps telling me that drive needs to be reformatted. i decided to cut my losses and try to reformat it but my computer wont allow me to do that.
i've tried uninstalling and re-installing drivers with no luck
i've checked device manager and its telling me drive is working properly

Chowhound
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