Best way to revert back to 10.6.6?

Discussion in 'MacBook Air' started by n8c, Apr 7, 2011.

  1. n8c macrumors member

    Joined:
    Jan 19, 2008
    #1
    Is a clean reinstall of the OS the only way to revert back to 10.6.6 from 10.6.7, or can I just pop in the USB recovery stick and click "install" (mine has 10.6.5 on it, so I'd then update to 10.6.6 using the files from Apple's website).
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    Clean install is the only way, as a normal install will keep the 10.6.7 update.
    What problem do you have with 10.6.7?
     
  3. n8c thread starter macrumors member

    Joined:
    Jan 19, 2008
    #3
    Games are running slowly.

    Can someone point me to a thread or other online guide explaining the best way to backup, then restore my drive/settings after reinstalling?

    If it's that much trouble, I might just be lazy and wait around for 10.6.8...
     
  4. jmazzamj macrumors regular

    Joined:
    Jun 11, 2009
    #5
    Download Carbon Copy Cloner (free) o SuperDuper! (the free version is fine and has always worked for me) and install it. Pop in an empy or BACKED UP USB HD and clone your HD content to the external (partitioned is fine).
    Now boot your Mac holding down the option (alt) key and select your external as the boot drive. Play around to make sure your HD was succesfully backed up onto the external. Insert your USB key and clean install SL in your Mac. When prompt plug in your external and migrate your *old* content to your fresh SL. Download and install 10.6.6 from Apple wesite (delta update is recommended).

    I hope this helps

    P.D: a TM back up would do the trick as well, but could take very long to complete.
     
  5. n8c thread starter macrumors member

    Joined:
    Jan 19, 2008
    #6
    Thanks! So the partition I am cloning into must be totally empty?
     
  6. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #7
    No, but it should not have any folders on it in its root with the same names as your Mac OS system HDD, like "Library", "Applications" and such.
     
  7. n8c thread starter macrumors member

    Joined:
    Jan 19, 2008
    #8
    Ok--I think I'm good with all of the steps except how to migrate the clone onto the fresh install. Is the "prompt" above referring to migration assistant (will it ask me if I'd like to migrate from a USB clone?)? Or, do I drag and drop files? Or is there a different program that will replace everything for me?

    Thanks again.
     
  8. chrfr macrumors 603

    Joined:
    Jul 11, 2009
    #9
    Just boot up from the install media, don't run the installer from within your existing installation. Once the computer has started up it will then just install whatever version of the OS is included on that without the latest updates. No need to format your drive or anything like that.
    Be certain you have a backup before doing this in case something goes wrong.
     
  9. n8c thread starter macrumors member

    Joined:
    Jan 19, 2008
    #10
    chrfr, so you're saying that I *don't* need to clone and do a fresh reinstall? That if I boot and reinstall from the USB stick (by pressing C as I boot, right?) that it will save all of my settings and data, and will still revert back to 10.6.5 (the version on the stick)?
     
  10. chrfr macrumors 603

    Joined:
    Jul 11, 2009
    #11
    Yes, that is correct, unless the USB stick works differently than the DVDs do. If the USB drive gives you the installer option when you boot the computer from it, it won't overwrite your data.
    Again, make sure you have a good backup first, just in case.
     
  11. jonnysods macrumors 601

    jonnysods

    Joined:
    Sep 20, 2006
    Location:
    There & Back Again
    #12
    Sorry man, there is no way.

    Although I don't know what you can do to get back to 10.6.6. The only update you can get now is the combo update, at least I think that's the case...
     
  12. n8c thread starter macrumors member

    Joined:
    Jan 19, 2008
    #13
    I can confirm that chrfr's method of reverting was quick and painless, and it does work. Just plug in the USB stick, hold down "C" while restarting, and install from there. This nicely reverts the OS back without having to wipe the hard drive, and without ever having to restore any data.

    Also, to get back to 10.6.7 without combo updates, you can download the incremental updates directly from Apple here: http://support.apple.com/downloads/#macosx106
     
  13. major7 macrumors member

    Joined:
    Oct 20, 2010
    Location:
    Porto, Portugal
    #14
    That's excellent news!

    I thought it couldnt be done....like in windows. It will be much easier to revert and make tests with games for all the software updates.

    Thanks!
     
  14. ByHisWounds macrumors newbie

    Joined:
    Apr 14, 2011
    #15
    Question for n8c

    n8c,

    How do you make or obtain the "USB recovery stick" you referred to in your previous posts? I'm also trying to revert from 10.6.7 to 10.6.6. I have a Western Digital external hard drive attached via USB, and I have all my files backed up. Where do I go from here?

    Thanks in advance,

    Jeremy
     
  15. n8c thread starter macrumors member

    Joined:
    Jan 19, 2008
    #16
    It came with your MacBook Air, in the little black box with the guide and apple stickers. Or, if you have a computer other than an Air, then you just use your recovery CD.
     

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