7 Replies Latest reply: Nov 23, 2013 2:25 PM by Michael Murphy3
gbmatty Level 1 (0 points)

Getting error message "OS X Mavericks cannot be installed on this computer" Learn More and Ok are the only options that I have.

Currently I'm running:



Any help from the Community would be huge.




Mac OS X (10.6.8), 11GB DDR2 SDRAM
  • Grant Bennet-Alder Level 9 (56,466 points)

    DDR2 Ram says you are running a 2008 or older.


    If that is  a Mac Pro 1,1 from 2006 or a Mac Pro 2,1, from 2007, that is the reason you cannot run 10.9 Mavericks. You cannot run 10.8 Mountain Lion either -- your Mac does not have the required 64-bit EFI firmware, and there is no update available.

  • Fanatik333 Level 1 (0 points)

    So if I have DDR2 Ram, there is no possibility of upgrading to Mavericks?

    I installed mavericks onto an external hard drive (using a backup of my early

    2011 mac book pro), tried to boot it with my early 2008 macbook and

    this is what the screen looks like. Hoping to install Mavericks on my early 2008 macbook too.

    Any advice would be appreciated



  • Grant Bennet-Alder Level 9 (56,466 points)

    Mac models compatible with OS X Mavericks

    • iMac (Mid 2007 or newer)
    • MacBook (Late 2008 Aluminum, or Early 2009 or newer)
    • MacBook Pro (Mid/Late 2007 or newer)
    • MacBook Air (Late 2008 or newer)
    • Mac mini (Early 2009 or newer)
    • Mac Pro (Early 2008 or newer)
    • Xserve (Early 2009)


  • Fanatik333 Level 1 (0 points)

    Thanks, is this set in stone or is there a chance of some kind of update for the Early 2008 macbook?

  • Grant Bennet-Alder Level 9 (56,466 points)

    There is no chance whatsoever of getting around that. Your Mac does not contain the Firmware required to run 64-bit kernel, so 10.7 Lion (running in 32-bit mode) is the end of its upgradeability.


    There is a developer-level hack that can load the required firmware into RAM, but it is complex and may be unstable. Not recommended for daily use.

  • Fanatik333 Level 1 (0 points)

    Good to know, thank you for clearing that up!

  • Michael Murphy3 Level 2 (280 points)

    If you would like to verify, I believe you can restart while holding down the 6 & the 4 keys; whereupon you need to be able to see in your Activity Monitor under "Process Name", "kernel_task" shows either "Intel" or "Intel (64 bit)" under "Kind" - the latter of the two is needed.