Formatting Macbook Air?

Discussion in 'MacBook Air' started by GKDAIR, Apr 4, 2014.

  1. GKDAIR macrumors regular

    Oct 4, 2011
    So, for a while now I have struggled with keeping space on my Macbook Air.

    The biggest things I have are my itunes and all my Sims 3 games, but yet I still barely have 30 gigs free. I can't figure out what is taking up all the space, and I have programs like DaisyDisk installed to help me out.

    There is nothing on this computer I can't live without that hasn't already been transferred, so I'm wondering if there is a way to just simply format my Air and erase everything off of it and start from scratch?
  2. petvas macrumors 601


    Jul 20, 2006
    Mannheim, Germany
  3. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    Sure.... just command-r boot to recovery. Then start Disk Utility and erase Macintosh HD to Mac OS Extended (Journaled). Quit Disk Utility then click reinstall OS and wait while the ~5GB OS downloads and installs.

    At the end a setup process will run where you can setup a new admin account for yourself. This will give you a clean account with nothing but the OS installed.

    If you want to give this a shot first though, enter the command below in Terminal and post up the output. This will list all the root folders and the size of each in GB.

    sudo du -d 1 -x -c -g /

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