10 Replies Latest reply: Aug 21, 2012 12:06 PM by WittyID
WittyID Level 1 (0 points)

App Store tells me that 'We could not complete your purchase. OS X Mountain Lion is not compatible with this computer.' I've already bought it on my Mac Book Pro and want to update the Mac mini. The Mac Book Pro now also gives black squares on boot up after installing ML.

Mac mini, Mac OS X (10.7.4)
  • Michael Black Level 7 (20,421 points)

    Is your mini from early 2009 or newer?


    Supported hardware for OS X 10.8 is: http://support.apple.com/kb/HT5444

  • mwfanelli Level 1 (65 points)

    Not all machines are compatible with ML. They can't go any further than Lion. What year Mac are you trying to upgrade?

  • mende1 Level 10 (92,231 points)

    Your Mac doesn't support 10.8. Stay with Lion or buy a new computer

  • WittyID Level 1 (0 points)

    Many Thanks - Mine is pre 2009. What about the black squares on the Mac Book?

  • WittyID Level 1 (0 points)

    Many Thanks - What about the black squares on the Mac Book?

  • WittyID Level 1 (0 points)

    Many Thanks - Will stick with what I got for now. What about the black squares on the Mac Book?

  • Michael Black Level 7 (20,421 points)

    What year/model of MBP is it?  And could you post a screen shot to show what you mean (are these big blocks, or small gird-like squares?).  Does it display properly once it has completed booting up?


    Also, if your MBP is under warranty or you have AppleCare, you could take it in for a Genius assessment at an Apple Store.  Often, graphics oddities at startup are a sign of hardware issues, not software (eg. dying graphics chipset or a logic board issue).

  • WittyID Level 1 (0 points)

    I will try to get a screen shot, but it is smaller squares and only five or so and they disppear once booted up.

  • Michael Black Level 7 (20,421 points)

    Are they small enough to just be single pixels?  You can download some free little tools to check for dead or stuck pixels - basically just little scripts that sequentially turn your screen all black, then all white, then all red, then blue, then green (I have not used any such app in a long time, but I'm sure they are out there at macupdate or another Mac freeware/shareware apps site).


    If everything else about the machine is fine, it could well be a hardware glitch (although not necessarily anything really terrible, just annoying perhaps).  If so, and you are under warranty, be sure to take advantage and get it checked out.  If not under warranty, and it is not getting worse and is only during boot up, then personally, I would probably not worry about it until or unless something got worse.

  • WittyID Level 1 (0 points)

    Insert Image not working!!!