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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Consumer Hardware & Components > Backup Disk Failed - How to Repair?

Backup Disk Failed - How to Repair?
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Join Date: Apr 2007
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Jan 9, 2009, 02:09 PM
 
For about eight months now I've been using an external 1TB hard drive (OWC Mercury Elite Pro) as my Time Machine backup disk. This morning I discovered a couple of important files are corrupt and won't open, so I turned to my trusty Time Machine to recover them. Only to get a warning that "The storage location for Time Machine backups can't be found." I noticed the drive wasn't mounted. So I went into Disk Utility: both Verify Disk and Repair Disk commands result in these errors (in red, after "Checking Catalog file.":

Invalid sibling link
Volume check failed.
Error: Filesystem verify or repair failed.

I've tried mounting the hard drive and running Disk Utility from two machines (both running 10.5.5) connected with both Firewire 800 & 400 and get the same results. Any clue as to what's going on?

I tried TechTool>Volume Structures Repair, and got the error "Failed. Bitmap Mismatch. (-90)" I tried AppleJack, but that only seems to look at internal drives. I have an old version of DiskWarrior (3.0.2) that I'm afraid is too old and might cause more trouble than it's worth. Any other software that anybody can recommend that might help?

Thanks in advance...
     
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Join Date: May 2001
Location: Hilbert space
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Jan 9, 2009, 02:30 PM
 
I recommend you try Data Rescue. Unfortunately you've already tried other tools, so they might have made matters worse actually.
I don't suffer from insanity, I enjoy every minute of it.
     
   
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