Hard disk w/ invalid node structure - Disk Util Repair fails

I have a 15" MacBook Pro that started having problems when software installs were run on it. It came back with out of disk space on volume ("null"). I ran Disk Util after booting off my OS X install disk. I get the following:
Verify and Repair disk "Macintosh HD"
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Invalid node structure
Volume check failed.
Error: The underlying task reported a failure on exit
1 HFS volume checked
1 volume could not be repaired because of an error
I did a repair disk permissions before executing the Repair Disk so that is all set.
Any guidance here would be helpful. I would rather not reformat the disk and start over if I can help it.

Hi, William.
See the "Disk Utility cannot repair the disk" section of my "Resolving Disk, Permission, and Cache Corruption" FAQ.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

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    Invalid Node Structure is not a hardware failure, it never was (you may still have a hardware failure, but the Invalid Node error is not indicative of this problem. 
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  • IMac (March 2009) - Invalid Node Structure problem

    Hi All
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  • Invalid node structure, files are visible in single mode

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  • I have an error of invalid node structure

    I have an error of invalid node structure.  Can I save my data from my hard drive? Is it even fixable?

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  • Invalid Node Structure error

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  • Dreaded "invalid node structure" dealie

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    macbook 1.8GHz - PB G3 (Lombard) 333mHz   Mac OS X (10.4.9)  
    macbook 1.8G - PB G3 (Lombard) 333mHz   Mac OS X (10.4.9)  

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    macbook 1.8G - PB G3 (Lombard) 333mHz   Mac OS X (10.4.9)  

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