You apparently deleted the HD's driver file. If you kept the CD that came with the HD it contains the driver file that must be installed in order to recognize and formate the HD in the USB container. If not, you'll have to download the driver and installation disk from the manufacturer.

Gary

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Travlin' Easy
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)