9 Replies Latest reply: Jun 5, 2012 1:55 AM by 清水だりん Branched to a new discussion.
heinzhox Level 1 Level 1 (0 points)

my mac won't boot after updating to 10.7.4

  • 1. Re: macpro boot lion update 10.7.4
    Stefambe Level 1 Level 1 (0 points)

    My mac too! It's a big problem

  • 2. Re: macpro boot lion update 10.7.4
    Bummy56 Level 1 Level 1 (0 points)

    Same problem after the update.  Now I can't even access my Mac Pro.  What is the solution to get it running again, Apple????

  • 3. Re: macpro boot lion update 10.7.4
    petermac87 Level 5 Level 5 (4,205 points)

    heinzhox wrote:

     

    my mac won't boot after updating to 10.7.4

    Did you update through Software Update or did you use the Combo Update from

     

    http://support.apple.com/kb/DL1524

     

    Pete

  • 4. Re: macpro boot lion update 10.7.4
    Christopher Koveleski Level 1 Level 1 (80 points)

    Allen .. You are running 10.7.4 on a 12 Core Mac Pro?

     

    After 25+ hard resets directly after the 10.7.4 update .. two days of no progress .. and no clue within the Activity Monitor .. or choice of application. I can't get to scan logs the Console before it freezes.

     

    A bare bones clean install still provided no solution .. so what remains as the cause is the 10.7.4 update .. as well as the many others reporting problems. .. or my whole machine is shot. The SSD startup doisk has been checked .. and everything was working .. other than performance problems in Adobe Master Suite 5.5 .. and a common Quicktime problem.

     

    Do you have a 12 Core 2.93 GHZ ... or another model?

     

     

    What type of graphics card?

  • 5. Re: macpro boot lion update 10.7.4
    JoseDLF Level 1 Level 1 (0 points)

    If you are using a PC nVidia GeForce Graphics card on a MacPro, update 10.7.4 causes black screen on restart.

     

    If it is your case, try restarting using only the original Apple graphics card of your system, install 10.7.4 drivers (available on nVidia website) and restart again with your GeForce card.

     

    It was exactly my case, and it works.

    After updating Lion and reinstaling nVidia drivers, my GeForce GTX 550 Xi runs slightly 7% faster than before.

  • 6. Re: macpro boot lion update 10.7.4
    Christopher Koveleski Level 1 Level 1 (80 points)

    Not %100 sure yet .. but the NVidia Card drivers may be the culprit. There is an update on their sight. I have two more tests to confirm. I will post back.

  • 7. Re: macpro boot lion update 10.7.4
    清水だりん Level 1 Level 1 (85 points)

    I have an 8, not 12 core Mac Pro, and am experiencing similar problems. I have an upgrade ATI card as well.

    I tried taking my upgrade card out

    I've tried reinstalling Lion, but it automatically installs 10.7.4.

    I tried formatting and reinstalling Lion, but again it does 10.7.4 automatically.

    I ran the extended hardware diagnostics program but it found nothing

    I tried to restore 10.7.3 from a time machine backup but it freezes after an hour doing that.

    Next I'm going to take my upgrade card out and try to restore a 10.7.3 from time machine

    I was actually running 10.7.4 for a week before I started to have problems so I'm. It absolutely convinced it is a 1 to 1 relationship.

  • 8. Re: macpro boot lion update 10.7.4
    清水だりん Level 1 Level 1 (85 points)

    EDIT: I was actually running 10.7.4 for a week before I started to have problems so I'm not absolutely convinced it is a 1 to 1 relationship.

     

    It still freezes when restoring from Time Machine even with the upgrade card removed.

    Now I've put the card back in, and am installing 10.5.x as that is what came with the machine. From there I'll upgrade to 10.6.x and then I'll see if I can somehow go to 10.7.3. If I can't, I'll stay at 10.6.x; asuming I'm able to install that.

     

    Because it freezes doing restore with any new hardware removed I'm not confident it will.

  • 9. Re: macpro boot lion update 10.7.4
    清水だりん Level 1 Level 1 (85 points)

    I brought mine in to the Apple store and they found that my MCP Die was running very hot (88c). They will keep it for a week and do more tests, but the theory is that the backpannel logic board will have to be replaced for about ¥30,000JPY.