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A DIY solution to an invalid node structure problem
Authored by: dkiechle on Feb 15, '07 01:51:21PM

I have no doubt that this worked for you, and I fully agree that Dr. Smoke rocks, but Disk Warrior would have solved your problem much more quickly -- this time and whenever you run into disk problems again. Believe me, you're not doing yourself any favors by not purchasing a vital utility like that. Isn't your time worth more than that?

Oh yes, one more thing: I have a full duplicate of all my disk partitions, inlcuding the boot partition, done with Retrospect Express to an external drive, so I can easily boot off my external drive, reformat my boot partition on the internal hard disk, then restore everything. I would no more think of using my main Mac without stuff like this than I would think of driving without seatbelts or insurance.


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Authored by: gidds on Feb 15, '07 03:23:29PM
Daniel puts things a bit strongly, but I'd agree with all he says.

DiskWarrior isn't particularly cheap, but it's a very important tool to have. It complements Disk First Aid/fsck, which can spot all sorts of problems quickly, and fix many. DiskWarrior uses a completely different method, so it can recover data and fix problems that nothing else can -- and in doing so, it'll optimise the directory, fix minor issues you'd never notice, and generally give your disk a bit of a spring clean. It's a really good thing to turn to when you're in trouble.

Also, I hope I don't have to tell everyone here that BACKUPS ARE A GOOD IDEA! HDs fail, apps crash, files get deleted by mistake, and if you're able to avoid several weeks' worth of work re-ripping all your CDs, typing in financial data, or crying over irreplaceable family photos, then you'll consider the time and money spent on backing up well worth it.

I too have an external FireWire drive which contains a clone of each of my drives. It's bootable, too; being able to boot from it has saved my bacon more than once. I used to use Carbon Copy Cloner, but now use SuperDuper! as it preserves the most data. (CCC doesn't do BSD flags, locked flag, creation date, HFS+ extended attributes, or ACLs. For lots more info and detailed comparisons of all the major backup tools, go to

But whatever you use, make sure you've thought through what might happen, and worked out how much (or how little) preventative action it's worth you taking.


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