Since I upgraded my Mac to OS x 10.8.2 my time machine schedule backup is not working anymore it is not recognizing my HITACHI XL1000
Is there an updtae to perform on the HITACHI itself???
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Does the drive show on the DeskTop: If it does, Have you tried going into TimeMachine Settings and re-selecting the drive. If it doesn't show try another USB port and cable, if that doesn't do anything it's often the power supply.