Repair Startup Disk

Discussion in 'macOS' started by rwm17, Jun 6, 2011.

  1. rwm17 macrumors newbie

    Apr 24, 2011
    hey there,

    so i go to use onyx and verify the startup volume or whatever terminology it uses (i'm more proficient w/ mobile stuff then computer software, fyi.)

    this points me to disk utility to fix the startup disk, but when i do, i get this. (look at the screenshot.)

    what, if anything, will fixing it do for me? and how would i go about fixing it?



    Attached Files:

  2. davidlv macrumors 65816

    Apr 5, 2009
    Kyoto, Japan
    You must start up from the DVD Install disk, as you can't repair the disk you are starting up from. After choosing a language, do not continue with the installation, but rather pull down the Utilities Menu, Disk Utility and try repairing the disk.
  3. John T macrumors 68020

    John T

    Mar 18, 2006
    Absolutely! Your internal disc can't repair itself!

    In other words, do exactly as the drop-down tells you. :)
  4. BrianBaughn macrumors 603


    Feb 13, 2011
    Baltimore, Maryland
    There are ways to get around the necessity to startup from another volume (such as the install DVD) to repair the system disk. An easy one is "Applejack" ( ). You run Applejack in "single user" startup mode.

    The app comes with excellent instructions and is much quicker for disk repair than going through the install DVD procedure.

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