copying /dev/da0 with dd(1) to file: output differs

[Matthias Apitz]

El día Friday, November 19, 2010 a las 06:21:09PM +0100, Hans Petter Selasky escribió:

> > > Can you dump the data into hex using hexdump -C and show us the
> > > difference.
> > 
> > Note: the output of the dd(1) is around 3.8 GByte. I compared the 1st
> > 2.000.000 lines of the hexdump: no diff; any better tool to show the 1st
> > block which differs?
> > 
> > > Usually you would use bs=65536 (Does that change anything)?
> > 
> > Same result: they differ :-(
> > 
> > 	matthias
> 
> bsdiff ?

This will not work with such big files (requires 8x memory of the file):

I was thinking in a tool just reading each file block by block,
comparing the blocks and noting the 1st diff with block offset number.
(some 10 lines of C code :-))

	matthias
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Matthias Apitz
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