On 02/12/2014 08:08 AM, Bernhard Voelker wrote: > In various mailing list threads about failing discs like [1], > the advices for trying to rescue as much data as possible > always mention gnu_ddrescue, ddrescue or dd_rescue, and > often claim that plain dd is a bad choice (not in this > case). > > [1] http://lists.opensuse.org/opensuse/2014-02/msg00424.html > > Would it really be that bad to use something like the following? > > dd if=/dev/sda1 of=sda1.img conv=noerror iflag=fullblock > > If this is true, we could add a link like > http://www.gnu.org/software/ddrescue/ > into the Texinfo manual, otherwise, we should add an example > like the above.
This was discussed in http://bugs.gnu.org/6667 You would need conv=sync to pad out the unreadable parts. The example from there would be useful in the docs. > (AFAIK tools like ddrescue try an adaptive approach for > 'ibs' values on failing sectors, and have other sophisticated > features like backup merging - admitted.) Right, so would be good to mention along with the example. thanks, Pádraig.
