[Bug 539] dd gets stuck on bad sectors

Thu Aug 6 05:51:35 UTC 2009

https://bugs.busybox.net/show_bug.cgi?id=539


--- Comment #2 from James Laird <j_laird at bigpond.net.au>  2009-08-06 05:51:35 UTC ---
I disagree.
With noerror:
If you get a short read you should seek to the end of the current block and
then continue. The short-read block is padded with nulls (standard noerror
operation).
Where sync comes in is that blocks for which no data is read at all are
correctly inserted as nul blocks in the output (otherwise you break data
structures).

>From GNU dd - when a partial read occurs, a partial seek is performed:
"advance_input_after_read_error (input_blocksize - partread)"
Your suggestion may advance to a non-block start byte after a partial read.


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