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Having kernel panics and wifi issues on mid-2010 iMac...

336 Views 9 Replies Latest reply: Nov 29, 2012 8:37 PM by Kappy RSS
MrFightinTexasAggie Level 1 Level 1 (0 points)
Currently Being Moderated
Nov 27, 2012 10:20 AM

Two weeks ago, I took my mid-2010 iMac in for the "hard drive recall replacement" and since I got it home, I have had nothing but issues with it. I migrated a previous backup from Time Machine back on the iMac.  That is where the problems came in.  I started having kernel panics severel times a day, random reboots and then when trying to load web pages, the status bar would go about 1/4 of the way and freeze.  ?Airport Card Issue?  My u-verse modem and wifi on my iphones and iPads have been working with no issues.  I tried to reinstall Mountain Lion and the wifi connection won't stay connected bu a few seconds and drops.  Should I hard wire it to get through the download?  Any help is greatly appreciated.

iMac, OS X Mountain Lion (10.8.2)
  • Kappy Level 10 Level 10 (220,950 points)

    I would definitely use Ethernet to download the Mountain Lion installer. Not only is it faster, it is also more reliable.

     

    Reinstalling Lion/Mountain Lion Without Erasing the Drive

     

    Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.

     

    Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.

     

    When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.

     

    Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.

     

    Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

     

    If you save the installer in your Downloads folder before you click on the Install button, then you can create a bootable flash drive which will save you from having to re-download whenever you need to reinstall it.

     

    Make Your Own Mountain/Lion Installer

     

    1. After downloading Mountain/Lion you must first save the Install Mac OS X Mountain/

        Lion application. After Mountain/Lion downloads DO NOT click on the Install button.

        Go to your Applications folder and make a copy of the Mountain/Lion installer. Move

        the copy into your Downloads folder. Now you can click on the Install button. You

        must do this because the installer deletes itself automatically when it finishes

        installing.

     

    2. Get a USB flash drive that is at least 8 GBs. Prep this flash drive as follows:

     

      a. Open Disk Utility in your Utilities folder.

      b. After DU loads select your flash drive (this is the entry with the mfgr.'s ID and size) from the left

          side list. Click on the Partition tab in the DU main window.

      c. Under the Volume Scheme heading set the number of partitions from the drop down menu to one.     

          Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the

          partition scheme to GUID then click on the OK button. Click on the Partition button and wait until

          the process has completed.

      d. Select the volume you just created (this is the sub-entry under the drive entry) from the left side

          list. Click on the Erase tab in the DU main window.

      e. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the

          button for Zero Data and click on OK to return to the Erase window.

      f. Click on the Erase button. The format process can take up to an hour depending upon the flash

         drive size.

     

    3. Locate the saved Mountain/Lion installer in your Downloads folder. CTRL- or RIGHT-click on the installer and select Show Package Contents from the contextual menu. Double-click on the Contents folder to open it. Double-click on the SharedSupport folder. In this folder you will see a disc image named InstallESD.dmg.

     

    4. Plug in your freshly prepared USB flash drive. You are going to clone the content of the InstallESD.dmg disc image to the flash drive as follows:

     

      a. Double-click on the InstallESD.dmg file to mount it on your Desktop.

      b. Open Disk Utility.

      c. Select the USB flash drive from the left side list.

      d. Click on the Restore tab in the DU main window.

      e. Select the USB flash drive volume from the left side list and drag it to the Destination entry field.

      f. Drag the mounted disc icon from the Desktop into the Source entry field.

      g. Double-check you got it right, then click on the Restore button.

     

    When the clone is completed you have a fully bootable installer that you can use without having to re-download Mountain/Lion.

     

    Note: The term Mountain/Lion used above means Lion or Mountain Lion.

     

    As an alternative to the above (you still have to do your own download of Lion/Mountain Lion) you can try using Lion DiskMaker 2.0 that automates the process of Steps 2 through 4.


  • Kappy Level 10 Level 10 (220,950 points)

    It would help to see the information about the panic. OS X- How to log a kernel panic and post the log here.

  • Kappy Level 10 Level 10 (220,950 points)

    Thank you, but those are crash logs, not kernel panic logs as I asked for.

  • Kappy Level 10 Level 10 (220,950 points)

    I'm not sure what to tell you. The panic arose in MS Word, so if it's a software panic then I'd look at your Office installation.

     

    This is quite different from the crash log. It very much seems like a hardware panic possibly from bad memory. But I'm just guessing.

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