Reformatting my Mac

Discussion in 'Mac OS X Lion (10.7)' started by legazy, Apr 24, 2012.

  1. legazy macrumors newbie

    Joined:
    Jul 12, 2010
    #1
    So lately my mac book pro has been running a little slow and with summer approaching (no school) i would like to reformat my mac then. I will aslo be adding additional ram when reformatting. So how would I go about doing this? I have an external hard drive for a mac. So do I just backup everything I want? Is there a "best" way to backup all the files on my computer? What do I do after I've backed up everything?

    Any help is greatly appreciated.
     
  2. Mattie Num Nums macrumors 68030

    Mattie Num Nums

    Joined:
    Mar 5, 2009
    Location:
    USA
    #2
    Boot to the restore partition, open disk utility, create a disk image of your hard drive, save it to the external, format, install os, migrate data from disk image. Best thing is if the OS install fails or something you can always revert back to the disk image.
     
  3. legazy thread starter macrumors newbie

    Joined:
    Jul 12, 2010
    #3
    How long does this usually take? Can I only take certain things off the disk image? Or should I just delete what I don't want before I make the disk image?

    Thanks for all the help
     
  4. Mattie Num Nums macrumors 68030

    Mattie Num Nums

    Joined:
    Mar 5, 2009
    Location:
    USA
    #4
    I've noticed 80 gigs of data takes an hour or two to create the image. I would always recommend cleaning up before making a full backup.
     
  5. legazy thread starter macrumors newbie

    Joined:
    Jul 12, 2010
    #5
    Thanks!
     

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