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  1. #1

    chinookmt's Avatar
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    shy external hard drive hides on me??
    When ever I go to my computer after it has been on for a period of time my external hard drive is no longer on my desktop. I need to go to disk utility to mount it again. Does anyone know why it "dismounts" every time I go away from my Mac, and how to fix it? have I somehow insulted it? :-)

  2. #2

    chscag's Avatar
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    Which hard drive do you have? Certain external hard drives have been known to go to sleep and will dismount. They have to be wakened before they'll mount and appear on the desktop.

  3. #3

    chinookmt's Avatar
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    I have a WD My Book Studio

  4. #4

    pigoo3's Avatar
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    I was thinking the same thing as chscag. The external HD is probably spinning down...and going to "sleep". Then after things have been idle for a while...it needs to be remounted (just as if the computer was shut off completely).

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  5. #5

    chinookmt's Avatar
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    is there any way to keep it awake?

  6. #6

    pigoo3's Avatar
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    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Quote Originally Posted by chinookmt View Post
    is there any way to keep it awake?
    Go to System Preferences...and check the settings there.

    But if this is an external HD that is USB powered (powered by the computers USB ports)...then when the computer goes to sleep...anything powered via the computers USB ports will go to sleep as well.

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  7. #7

    chinookmt's Avatar
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    Jan 18, 2009
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    The external drive is using a wall plug.

  8. #8

    chscag's Avatar
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    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    Check with Western Digital to see if there is a firmware update available for the drive. It really doesn't make any difference if it's AC powered or bus powered. Your Mac can still put it to sleep or the drive itself may be spinning down or timing out after a certain duration of non use.

  9. #9

    chinookmt's Avatar
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    Jan 18, 2009
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    Thank you I will check it out

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