Can't install ML - "Can't download additional components needed to install OS X"

Discussion in 'OS X Mountain Lion (10.8)' started by Andy C, Jul 28, 2012.

  1. macrumors newbie

    Oct 20, 2004
    Farnborough, UK
    Hi guys,

    I have an early 2009 iMac (iMac9,1 20" C2D 2.66MHz) and I've been trying to install Mountain Lion. I've made a USB Key with the image and I'm installing on to a empty partition. The installer runs fine, however the time remaining is never higher than 4 minutes, usually switching between 2 and 3 minutes. The progress bar reaches the end and it'll keep alternation between 1 and 2 minutes remaining. The bad thing is it always pops up and error stating:

    "Can't download additional components needed to install OS X"

    The only option available to me is Restart. The iMac is online as it's wired and I can use Safari from the Help option to visit any site. I've also connected to my WiFi network with no joy.

    Any ideas?

  2. macrumors 65816


    May 20, 2011
    Use this guide for creating an installer with the components that are missing.
    However it wont create a recovery partition. This guide has a script that will create one for you.
  3. macrumors newbie

    Nov 21, 2012
    Hey. First time poster on MacRumors.

    I was struggling with this problem for an hour or so, and managed to solve it by simply reformating my USB drive using Disk Utility and running Lion Diskmaker again.

    Hope this helps someone.

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