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Warning SparseImage corruption
Authored by: emarmite on Sep 24, '08 10:29:25AM

The SparseImage is contained within a file. If you are writing to it while your Mac dies for some reason the end result may be a corrupted file that can no longer be mounted, losing you the whole file & its contents as a result. As it's corrupted it cannot be mounted for Disk Utility to fix and as it's a file it can't be fixed without mounting.

I was using a sparseimage for my personal documents a few years ago. At the time my Powerbook often had problems coming back from sleep that required a power down and after a year, the inevitable happend: the file became corrupted and I lost some recent & valuable data. Even HFS with journaling doesn't protect you fully (go Google fsync to see why).

Not sure if this has been improved in 10.5 and/or if having Time Capsule makes any difference but beware, applying this tip does put your data at slightly more risk than before.

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