why is my first Time machine backup smaller than my HD size?

Discussion in 'macOS' started by STOCK411, Feb 23, 2015.

  1. STOCK411 macrumors regular

    Joined:
    Oct 15, 2007
    #1
    I got a new external hard drive and ran the first backup.. I have currently used 80GB of my hard drive but the first backup only is at 61.. Is something wrong?


    Photos

    Picture one is of my HD and my backup drive

    Picture 2 is of time machine buddy..


    All help would be appreciated...
     

    Attached Files:

  2. mfram macrumors 65816

    Joined:
    Jan 23, 2010
    Location:
    San Diego, CA USA
    #2
    There are some files that don't need to be backed up. Like the pagefile and the hibernation image file. How much RAM do you have? The more RAM you have, the bigger those files will be.
     
  3. STOCK411 thread starter macrumors regular

    Joined:
    Oct 15, 2007
    #3


    8gb
     
  4. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #4
    You are fine. Like mfram said, there is a bunch of stuff that is excluded like cache files.

    http://pondini.org/TM/11.html

    Look at this link for more info on exactly what is excluded.
     

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