Verify and Repair USB hard drive problems

Discussion in 'Mac Basics and Help' started by Will Cheyney, Jan 7, 2009.

  1. Will Cheyney macrumors 6502a

    Will Cheyney

    Jul 13, 2005
    United Kingdom
    My little external USB hard drive has started having problems.
    Although it appears in the Disk Utility app, it won't mount.

    When I try and verify or repair it, I get the following error:

    Verify and Repair volume “Little Disc”
    Checking Non-journaled HFS Plus volume.
    Invalid node structure
    Invalid B-tree node size
    Invalid node structure
    Invalid B-tree node size
    Volume check failed.
    Error: Filesystem verify or repair failed.
    Is there anything I can do to try and repair it, it is an erase my only option?

    Thanks all!
  2. BlueRevolution macrumors 603


    Jul 26, 2004
    Montreal, QC
    You could try a third-party utility like TechTool Pro. If the data on your drive is unimportant/backed up and don't feel like shelling out $100, yeah, a format is prettymuch your only option.

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