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  1. #1


    Member Since
    Jan 15, 2011
    Posts
    4
    Exclamation Invalid Node Structure
    I ran the fsck -fy adn got the following

    ** /dev/rdisk0s2
    ** Rot File System
    ** Checking Extents Overflow file.
    ** Checking Catalog file.
    disk0s2: 0xe0030005 (UNDEFINED)
    invalid node structure
    (4, 486)
    ** Rebuilding Catalog B-tree
    disk0s2: 0xe0030005 (UNDEFINED)
    invalid node structure
    (4, 483)
    disk0s2: 0xe0030005 (UNDEFINED)
    Invalid key Length
    (4, 754)
    Invalid node structure
    (4, 755)
    ** The volume Macintosh HD could not be repaired

    HELP!!! what does this mean!!!

  2. #2

    Kevriano's Avatar
    Member Since
    Jul 02, 2006
    Location
    Crawley, England
    Posts
    4,558
    Specs:
    20" Intel iMac 2.4 Ghz/3G Ram/320HD, Snow Leopard. PBook G4, 1.5Ghz/1.5 Ram/250 HD, Leopard 10.5.6.
    This basically means that your OS system library is not able to be restored because there is most likely a bad sector on your HD.
    The only fix for this error is to erase/reformat the HD and do a completely clean install.
    Try my custom Mac Forums Search Engine: Mac Forums Google Search

    Please use the reputation system if you consider any help given useful (it's the little ✓/✘ on the left <---)


  3. #3


    Member Since
    Dec 11, 2010
    Location
    Chicago
    Posts
    1,482
    Specs:
    late 2012 mini w/SSD

  4. #4


    Member Since
    Jan 15, 2011
    Posts
    4
    how do I do a reformat and install?

  5. #5

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    22,266
    Specs:
    Imac 27" Retina 5K, 512GB flash memory, 3.3GHz, 16GB memory, macOS Sierra beta.
    Pop in the system disc, hit restart and hold down 'C" after the chime. Select language and then go to Utilities in the Menu bar, select Disk Utility > Erase and that will wipe the drive and everything will be gone. Go to partition, partition if only on e single partition, from Options choose GUID if an Intel machine and Apple partition Map if a PowerPC.

    If the drive cannot be repaired just buy a new one. DiskWarrior is good but at $99 cheaper to replace the drive.
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  6. #6


    Member Since
    Jan 15, 2011
    Posts
    4
    I tried the start up disk and pushing the but nothing happens it just gets to the apple and the spinning wheel. Then it just turns off. I know this doesn't look good lol

  7. #7


    Member Since
    Jan 15, 2011
    Posts
    4
    I there any way to completely clean out the computer and then re install the everything?

  8. #8

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    49,107
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    HELP!!! what does this mean!!!
    It simply means your hard drive is toast. It should be replaced. If you've been making backups with Time Machine you won't lose data. Buy the new hard drive, install it, boot with your install media, format the new hard drive, restore from Time Machine. If you have no backup, just reinstall everything from your startup DVD.

    I there any way to completely clean out the computer and then re install the everything?
    See above.

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