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It worked!
Authored by: Krioni on Apr 28, '07 07:30:59PM

Quick note: I agree that hints should be posted here, not just links to hints elsewhere.

Most important: this WORKED!

I had a 2 GB encrypted image with important information on it that was corrupted in early September 2006. The last backup I had was from the end of July (I normally backup every night, but was in the middle of moving and the backup drives were packed away - very bad). Anyway, I had given up hope of ever retrieving the files from August, but when I came across this guy's process, I dug around and found both the good backup from July and the corrupt image on a secondary backup drive I have.

I renamed my images just to make it easier to try this, and it worked! I didn't even need DiskWarrior. Here's what I had to do, slightly different from his instructions (or perhaps I misunderstood them):

After the 'dd' step, then the 'hdiutil attach ...' step, you do the 'fsck_hfs -f /dev/diskXsY' step, where X and Y come from the results it gives you in the previous step (look at the Apple_HFS line in the results).

Mine said "appears to be OK." Problem - it still wouldn't mount when I tried. Instead of trying to mount by double-clicking, go to Disk Utility. In the list on the left will be Broken.sparseimage (or whatever yours is called), with a greyed-out volume icon below it, showing that it is there, but not mounted. Click on the volume icon, then run the Repair Disk. If it passes, or fixes something, then click the Mount button. Mine asked for the password, then mounted properly in the Finder. I was able to copy off everything I needed, recovering files I've thought were lost forever (including my personal thoughts on the process of quitting my job, selling my house, and moving to NYC to go to grad school).

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http://www.danshockley.com



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