MacBook Air USB Restore Key

Discussion in 'MacBook Air' started by tonynz, Nov 28, 2011.

  1. tonynz macrumors member

    Oct 24, 2008
    Hi all,

    I've just purchased my new baby - however can't seem to find a MacBook Air USB Restore Key.

    Is this standard?

    UK M/Air 128gb here.
  2. johnhurley macrumors 6502a


    Aug 29, 2011
    Use the Lion Recovery Disk assistant to make one ...
  3. blevins321 macrumors 68030

    Dec 24, 2010
    Winnipeg, MB
    The new Airs don't come with restore media. They have a restore partition on the hard drive, or alternately can boot directly from the internet to download a new copy of Lion.
  4. halledise, Nov 28, 2011
    Last edited: Nov 28, 2011

    halledise macrumors 65816

    May 7, 2009
    Hamilton Island, Whitsundays, QLD Australia
    by following the method in the second half, you can end up with Lion specific to your actual Mac on a 'bootable' usb stick.
    you can also use another stick to clone a recovery partition, thus allowing you to startup from one, erase the HDD, restart from the Installer stick and perform a clean install independent of the internet
    very handy if you live in a regional area for example, or don't have the patience or the bandwidth to wait for an over the 'net reinstall

    Downloading Hardware Specific Lion Installers
    (Contributed by: macshome on Macosxhints)

    With the change to the Mac App Store for delivery of OS X, Apple has stopped putting install media in the box with your shiny new Mac. If you want to re-install the OS then you use the Recovery HD and it installs right from the Mac App Store.

    This presents a challenge for people with managed system deployments as you never have an installer disk for new hardware that comes out after whatever is on the Mac App Store for download until the next release. There is away around this though to get a nice fresh copy of the installer for whatever new hardware you have.

    Read on for more…

    The Mac App Store is Smart

    The Mac App Store is smart enough to know what kind of hardware is requesting an re-install of Lion. By looking at the type of Mac and serial number it will then push down the InstallESD.dmg for that hardware directly to your computer.

    Then the Mac restarts from the image it downloaded and re-installs OS X.

    This is great for your mom to re-install Lion with, but it also deletes the image after it's done installing. What you need to do is grab that InstallerESD.dmg before it has a chance to do away with it.

    yet Mac Sysadmins are Smarter

    It's very easy to use the Mac App Store's smarts to our own advantage and gain access to a copy of that hardware specific OS build. Here's what to do:
    1. Boot the hardware you need an image for from the Recovery HD by holding Command-r at power on time.
    2. Plug in a JHFS+ formatted external disk.
    3. Select the Re-install OS X Lion option and target the external disk.
    4. Once the Installer finishes downloading, simply shutdown and unplug the disk.
    Now when you mount that external disk you will find a directory named Mac OS X Install Data on the root. Inside of this folder is the elusive, hardware-specific, InstallerESD.dmg image that you can feed to SIU or any other imaging tool of choice. Having this installer will now allow you to build out re-deployment images for all of your hardware until rollup installers are available.

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