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  1. #1
    Don't understand Time Machine

    Member Since
    Oct 14, 2009
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    Don't understand Time Machine
    I plugged in a external hard drive and backed up macbook to it. The drive is now disconnected so how when I click on the time machine app can I see the mac in time machine mode going back yesterday?

  2. #2
    Don't understand Time Machine
    louishen's Avatar
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    Oct 22, 2007
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    I am guessing that the mac stores when the last back-up happened and when the next ones are scheduled in a local prefs file, not on the back-up (although settings are backes up as well0
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  3. #3
    Don't understand Time Machine
    cwa107's Avatar
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    Dec 20, 2006
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    Quote Originally Posted by swoosta View Post
    I plugged in a external hard drive and backed up macbook to it. The drive is now disconnected so how when I click on the time machine app can I see the mac in time machine mode going back yesterday?
    I'm guessing you're running OS X 10.7 (Lion), yes?

    If so, note that Lion does a local backup cache. It will continue to run backups of document revisions locally and then sync them up to the external when it's available. So, you'll always see backups available regardless of the status of that drive.
    Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!

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  4. #4
    Don't understand Time Machine

    Member Since
    Oct 14, 2009
    Posts
    97
    Thanks for your help

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