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Thread: Time Machine

  1. #1

    Member Since
    Dec 12, 2013
    Time Machine
    Time Machine refuses to backup on my external hard drive. Not sure how to check this out. Any suggestions?

  2. #2

    ferrarr's Avatar
    Member Since
    Jul 16, 2011
    Pawtucket, RI, US
    L2011 15 MBP Quad 2.2 I7 OS X.10 16GB 240GB SSD & 500GB HDD (no Optical drive)
    Time Machine
    Is this a new drive? It will most likely need to be formatted. Does the disk drive icon show on your desktop? If so, right click on it and "Get Info". Look to see how it is formatted. It needs to be formatted as Mac OS Extended. If it is not you will need to use Disk Utility to re-format the hard disk.

  3. #3

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Fort Worth, Texas
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, El Capitan
    Quote Originally Posted by glad View Post
    Time Machine refuses to backup on my external hard drive. Not sure how to check this out. Any suggestions?
    Time Machine will only backup to a Mac HFS+ formatted disk. Additionally, even if the disk is formatted correctly, TM will not backup to it if it has errors. You can verify the disk with Disk Utility which should be in your Applications, Utility folder.

  4. #4

    McBie's Avatar
    Member Since
    Apr 26, 2008
    2013 MBA 13" - OS X 10.11
    A quicker way of finding out what is wrong is to launch the from Applications/utilities and in the left hand pane select " All Messages " ( at the top )
    Then in the top right hand corner ( where it says String Matching ) type and hit enter.
    This will filter out all messages related to Time Machine and if you follow these in chronological order, you will find out what is wrong.
    This way it is also much easier to detect specific error codes and you can use it as a screenshot and post it back here for more detailed advise.

    Cheers ... McBie
    A computer lets you make more mistakes faster than any invention in human history - with the possible exceptions of handguns and tequila.
    The bitterness of poor quality remains long after the sweetness of low price is forgotten.

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