Shouldn't be a problem. Pop it in, and chances are it will be recognised as a drive anyway (MacOS reads DOS formatted disks etc), so you probably don't even NEED to format it. Best to give it a format though, to get rid of all of that windows rubbish, and make it more mac compliant.
So in short, it should be able to be formatted by disk utility.
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So in short, it should be able to be formatted by disk utility.