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I read that among various corruption risks is the filesystem corruption, that also affects TrueCrypt volumes, like any other system.I would like to know if it is possible that a corruption in some special small region can lead to lose the entire filesystem?

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Yes, there is one critical part in a TrueCrypt volume that has to be present and valid otherwise your data is lost: The Volume Header

This is the reason why TrueCrypt has the possibility to back-up this small region and save it somewehere else:

Select Tools -> Backup Volume Header

The Volume Header is really small it's - the first 512 bytes of the TrueCrypt container.

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According to the truecrypt FAQ, the cipherblock size is 16 bytes, so one bad bit will likely cause the loss of 16 bytes, but not the whole disk.

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so there isn't a more critical zone (for example the root of the filesystem files information), the risk is distributed? –  P5music Oct 25 '11 at 14:28

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