bug#6667: dd ?bug? while making image of hdd with bad sectors

[Assaf Gordon]

tags 6667 notabug
close 6667
stop

Hello,

On 19/07/10 08:44 AM, Pádraig Brady wrote:
> On 19/07/10 10:05, Jakub Muszynski wrote:
> > I have been trying to make a dd copy :
> >
> > dd if=/dev/sdb conv=noerror,sync bs=4096k|pv| dd of=usb320.dd
> > conv=noerror,sync bs=4096k > dd320.LOG
> >
> > but image took all my free diskspace (406GB), and terminated, eventhough
> > my hdd is 320GB
>
> dd doesn't read full blocks by default,
> so one has to be careful when reading from pipes.
[...]
> Does adding "iflag=fullblock" to the second dd fix things?
> Since you're not specifying a count, just removing the
> "sync" option from the second dd is equivalent.

With no further comments in 8 years, I'm closing this item.

regards,
 - assaf