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external hard drive disappers on iMac

Discussion in 'Apple Mac' started by larryecook, Jan 24, 2011.

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  1. larryecook

    larryecook Thread Starter

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    Some times When I turn my computer on I can't see my external hard drive. So I go to Disk Utilities and repair it and it works fine. Can someone tell me how to prevent this from happening? It happens often but not all the time.
     
  2. Headrush

    Headrush

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    Which Mac?

    USB or Firewire?

    If you power up the eternal HD after the Mac has started does it always auto mount then?

    I'd be worried if you keep getting disk errors. Do you remember what errors Disk Utility repaired?
    When the Mac shuts down it should take care of everything but are you always unmounting the external HD correctly if not letting the OS do it on shutdown?
     
  3. larryecook

    larryecook Thread Starter

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    Its a USB I don't always unmount it.
     
  4. larryecook

    larryecook Thread Starter

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    Ok I tried ejecting it that did not help.:confused:
     
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