MP RAM issue after 10.5.6 update

Discussion in 'Mac Pro' started by ObaMaciden, Dec 18, 2008.

  1. ObaMaciden macrumors member


    Nov 4, 2008
    A weird thing happened after I installed the latest 10.5.6 update downloaded from The update I downloaded is the combo 668.7MB dmg.

    After installation, I restarted as promted.

    The MP restarted, then System Profiler showed only 12GB out of 16GB of RAM installed (I have 8x 2GB, but Riser B's DIMM 1 & 2 showed "empty""). Next the sys froze when attempting to open Activity Monitor.

    I restarted OSX, now the screen of death at Apple logo

    I turned MP off, took each RAM Dimm out and physically reinstalled. Started the MPagain, same thing.

    Repeated RAM physical reinstall as before.

    Restarted and everything works --16GB of RAM. FYI, my RAM is from OWC.

    Any idea what went wrong? Does it sound like a software/RAM/MP issue to you? :confused:
  2. UltraNEO* macrumors 601


    Jun 16, 2007
    I think you could of avoid removing the memory, if only you knew how to reset the SMC and the PRAM
  3. ObaMaciden thread starter macrumors member


    Nov 4, 2008
    Thanks for the link.:D Hopefully I won't need to use SMC anytime soon.

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