4 Replies Latest reply: Jul 15, 2013 3:30 PM by devinclarke
devinclarke Level 1 Level 1 (0 points)

My machine is a late 2011 17" MacBook Pro. I have 8GB of ram and am running 10.8.4. I ( and other logged in users) keep gettting the spinnging rainbow wheel. From what I've bee able to identify it is Safari that is causing my laptop to freeze. When I watch the console screen when it happens I get "kernel[0]: disk0s2: I/O error". We have all switched to using other browsers and no longer get the freezing or errors. Any suggestions?



MacBook Pro (17-inch Late 2011), OS X Mountain Lion (10.8.1)
  • Carolyn Samit Level 10 Level 10 (95,950 points)

    ( and other logged in users) keep gettting the spinnging rainbow wheel.


    When you have problems with Safari in multiple user accounts, that's an indication that the startup disk needs repairing.


    Launch Disk Utility located in HD > Applications > Utilities


    Select the startup disk on the left then select the First Aid tab.


    Click Verify Disk  (not Verify Disk Permissions)


    If Disk Utility reports errors, with v10.8 Mountain Lion installed, the only way to repair the startup disk is to use OS X Recovery.

  • Linc Davis Level 10 Level 10 (153,955 points)

    The boot drive is failing, or you have some other hardware fault.

    Make a "Genius" appointment at an Apple Store.

    Back up all data on the internal drive(s) before you hand over your computer to anyone. If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.

    Keeping your confidential data secure during hardware repair

    *An SSD doesn't need to be zeroed.

  • devinclarke Level 1 Level 1 (0 points)

    Carolyn I've run Disk Utility( verify disk and verify disk permissions) a couple times and everything comes up ok. Same when using TechTool.

  • devinclarke Level 1 Level 1 (0 points)

    Thanks Linc. I'll likely have to do that. I just cant figure out why it runs perfect when Safari isn't open and when it is nothing but hang ups and the spinning ball.