iMac very slow after latest OSX update

Discussion in 'macOS' started by barenature, Apr 26, 2011.

  1. barenature, Apr 26, 2011
    Last edited: Apr 26, 2011

    barenature macrumors newbie

    Oct 11, 2010

    Something odd happened to me yesterday and I'd like to ask for your opinion. I had been postponing the latest update of OSX for a few weeks and decided to finally install this update yesterday.

    After installing this update, my iMac became terribly slow up to the point that it is basically unusable. Booting up takes ages and when logged in I see the spinning beach ball more than I'd like. I couldn't figure out what the problem was and decided to simply do a clean install as I did not have the time to figure this out.

    After a clean install, I downloaded all the updates and the iMac seemed to run smooth again, but this morning I noticed that the iMac is again extremely slow.

    Has anyone of you experienced this problem before?

    Some additional information:
    - iMac 20" 2.4GHz 4GB RAM 320 HDD
    - tried resetting PRAM
    - HDD only has one partition (so no Bootcamp)

    I have run an Apple Hardware Test and I am getting an HDD error. The odd thing is that when I now boot from the install DVD and launch Disk Utility, my HD is not even showing up. It only shows up as a drive labeled "Media".

    Very odd that this is the result (orat least induced by) a software update.

    I'm now installing OSX on an external HD to get at least some work done as I cannot afford to lose my Mac for repairs at this point.

  2. willfurnell macrumors member


    Feb 24, 2011
    Try a SMART status check on your drive, it may be failing. Best to check now, and backup in case you loose you data.
  3. barenature thread starter macrumors newbie

    Oct 11, 2010
    Thanks for your suggestion, Will.

    However, some strange things are going on over here. As I mentioned, I have installed OSX on an external HD (connected via FW800), but my internal HD doesn't even show up in Disc Utility. I assume that my internal HD has gone to heaven.

    The new setup (using the external HD) works quite well, but this is of course only a temporary solution.

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