* martin f. krafft:

>> A corrupt sector corrupts the remaining part of the block.  Block
>> sizes are much smaller than 1 GB because when part of a block is
>> changed, all the following bytes have to be rewritten (if a reasonable
>> the cipher mode is used).
>
> Of course blocks are small, e.g. 64 bytes.

These are *cipher* blocks, and they are chained only within a *block
device* block.


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