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I have a WD 1TB My Book Studio Edition connected to my Mac Book Pro. There was a brief power outage, during which the drive shut down, but the computer kept running on battery power. Now the power's back on and I can't get the computer to recognize the drive. Any suggestions?

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Turn off the MacBook, disconnect the disk, disconnect adapter and remove battery and turn it back on.
Do the same on the WD My Book. The My Book has a switch at the back. Ensure that switch is off, and connect it to the Mac using a different USB port. After connecting the disk, turn the disk on. The Mac will need some times to detect and 'wake up' the My book.

If the disk is not getting recognized, then it is probably faulty in consequence of the power surge. In that case test the disk using a different Mac or PC (depending on partition-Fat32 is supported by both). If it is faulty, call WD to verify warranty status or replace the enclosure to attempt recovering data.

I have written similar guidelines in this article:The computer does not see MyBook anymore.

Posted on May 15, 2010

  • chipsmc May 15, 2010


    The drive will not turn off. When I hold down the power button, nothing happens. The big white light on the front of the drive stays lit. Does that tell you anything?

    Thanks for your help.

  • Ginko
    Ginko May 15, 2010


    Re:" The drive will not turn off. When I hold down the power button, nothing
    happens. The big white light on the front of the drive stays lit. "

    It looks like a defective control board in the WD MyBook. After connecting the disk to different computers, the only efficent way of testing is by mounting the internal HDD on a different enclosure.Your Mybook is covered with one year warranty. If the unit is less tan one year old, contact WD to get it repaired.

    If the WD is over one year old, you can trying recovering data by using a different enclosure. If the Mac mounts the hard drive mounted on a new enclosure, then the control board in the original WD enclosure was faulty.

    See also: How To Take Apart A Western Digital My Book ...



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