> If it doesn't take into account own changes, then the -n command is
> unable to produce even a slightly accurate resemblence of what would
> happen if I did a real run.
It takes into account some of them (such as reading data from the
backup superblock if it detects corruption). Others will be irrelevent
for further operations. Many reports will be accurate, especially
fatal ones. I consider that useful, YMMV.
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