Best method for Restoring an Air to Factory

Discussion in 'MacBook Air' started by Scarpad, Jul 27, 2011.

  1. Scarpad macrumors 68000

    Scarpad

    Joined:
    Jan 13, 2005
    Location:
    Ma
    #1
    I may be selling my Ultimate 13" Air as I just bought the lastest version of the 11". Whats the best path to wiping everything on the computer. Here's the rub thou, I've updated it to Lion, and I beleve a factory reset will reinstall SL.
     
  2. aristobrat macrumors G5

    Joined:
    Oct 14, 2005
    #2
    Use the USB restore key that came with it. It will reset it back to Snow Leopard. I don't think you're allowed to re-sell anything you buy from the App Store, anyhow.
     
  3. KPOM macrumors G5

    Joined:
    Oct 23, 2010
    #3
    Does the Lion installation create a restore partition? That may be the best way. Otherwise, restart through the USB key, restore Snow Leopard, and re-install Lion. I'd suggest erasing free space once or twice, though it may be of limited efficacy since SSDs are harder to completely wipe clean than HDDs.

    Maybe check out the Lion forums for advice on how to reinstall Lion cleanly.
     
  4. Scarpad thread starter macrumors 68000

    Scarpad

    Joined:
    Jan 13, 2005
    Location:
    Ma
    #4
    The person who buys will have to get his copy of Lion I'm sure.
     
  5. rkheyfets macrumors regular

    Joined:
    Dec 16, 2010
    Location:
    NYC
    #5
    If the person that buys it is getting their own copy of lion just use the restore USB key that it shipped with.
     
  6. f00f macrumors 65816

    Joined:
    Feb 18, 2009
    Location:
    New Yawk
    #6
    EDIT: Running on 3 hours sleep doesn't help me! Naturally if you're not going to distribute Lion with the machine don't follow this procedure, and restoring from the SL USB key is the best bet.


    If you have a USB disk you don't mind partitioning, make a partition ~ 4GB in size on it using Disk Utility. The USB disk itself should be bootable (GUID partition table). You then need to find the InstallESD.dmg from the Lion installer app that you downloaded from the MAS (go to the app in your Applications folder, right-click, Show Contents, navigate into the SharedResources folder). Mount that sucker by double-clicking it in the finder (it may take a little bit to verify the image). You'll have one new disk image showing in Finder called "Mac OS X Install ESD".

    Back in Disk Utility you need to click on the partition you made on your USB disk. Click on the Restore tab on the right side. Drag the Mac OS X Install ESD partition from the left pane to the Source box. Then drag the partition you made on your USB disk to the Destination box. Click the Restore button and go have a beer for the next few mins. If all goes well the Lion installer will be living on your USB disk. Mount it in Disk Utility by highlighting the partition you made and clicking the Mount button at the top (if it's not mounted already). To no one's surprise, that partition should now be called Mac OS X Install ESD.

    Now that you have your bootable Lion install media, plug that sucker into the Air you want to reset. Powerup or reboot the Air so it can boot off the USB disk. As the machine is booting up -- when you here the chime -- press Option. You should be presented with a list of devices from which to boot and your USB disk should be one of them (I think it calls it simply Mac OS X but the icon will be a USB disk icon). Double-click the USB disk.

    You'll be brought into the Lion Recovery Utilities. Here you can do things like fire up Disk Utility, terminal, etc, and Reinstall. You will want to use the Disk Utility to reformat the Air's SSD and then do the OSX reinstall.

    Hope this helps a bit. I wrote this very quickly from memory and I know there are other guides out there but I'll leave that for Google and Mroogle to answer. ;)

    Cheers & good luck
     

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