time machine question concerning MacBook Air

Discussion in 'MacBook Air' started by pooksie, Jul 25, 2013.

  1. pooksie macrumors newbie

    Jul 23, 2013

    to offer some background, I had a MacBook Air before that ran lion but I was careless and dropped it and it crashed on me :( but the good news is that I had it backed up!

    I just bought a new haswell laptop but it's currently running mountain lion. so will time machine turn the new laptop back into lion?
  2. ZBoater macrumors G3


    Jul 2, 2007
    Sunny Florida
  3. SteveJobs2.0 macrumors 6502a

    Mar 9, 2012
    Not to jujack the thread, but on the same note, if you go from a larger Mac to smaller air HDD, how would the migration assistant work? Say the the op's new hard drive is smaller than the one he had before so the migration assistant wouldn't not be able to a direct transfer of all the files.
  4. gr8tfly macrumors 603


    Oct 29, 2006
    ~119W 34N
    Migration Assistant doesn't restore an image backup. It's file based, so as long as the total of all the categories it migrates is less than the free space when it started, it should be fine. Even with the "system files" category is checked, it won't migrate old or duplicate OS files. This is mostly to migrate over 3rd party support files.
  5. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    Just to expand a bit on what gr8tfly said... it is all about the total size of the data and not drive size.

    If I understand your concern though, you are asking if say you have 200GB of personal data total and a new machine with a 120GB disk drive? Then you will have a problem. If you check all the options in Migration Assistant, it will calculate the size of the data and the destination and give you a message that you have too much data to fit on the new machine. What you can do to mitigate this is go through the selection list (below) and uncheck enough large categories to get below the new drive size limit. So if you unchecked Music and Photos, you would import everything else, then later move Music and Photos to an external drive perhaps.


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