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#11
If you don't mind losing all the data on the drive, you could try reformatting the drive to see if it is still usable or not. If it is still usable, then just keep it and use it. Keep in mind, the data is still there until overwritten and could be recovered until it's overwritten by either new data or by writing zeros over it. If it is not usable, take a big hammer to it, making sure the platters are destroyed. That way, even the FBI is unlikely to get at what's on it.