Date: Tue, 5 Jan 2010 22:16:45 +0300 From: Yuri Pankov <yuri.pankov@gmail.com> To: Christoph Kukulies <kuku@kukulies.org> Cc: freebsd-questions@freebsd.org Subject: Re: copying a disk with ignoring errors Message-ID: <20100105191645.GA1782@darklight.org.ru> In-Reply-To: <4B434D52.3030301@kukulies.org> References: <4B434D52.3030301@kukulies.org>
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On Tue, Jan 05, 2010 at 03:31:46PM +0100, Christoph Kukulies wrote: > I recall a case when I had a hard disk that had got bad sectors and > it wasn't accessible through normal mounting anymore. > Then a tool came into the game that - I believe - Poul Henning had > recommended or written for this purpose. > > It copies a disk sector by sector to a file (kind of dd), but > ignores errors, it just skips sectors it couldn't read (after a > couple > of retries). The result was, that one had a - albeit - worm-eaten - > image of the disk allowing to access the filesystem > and getting to the important files with a little luck these not > being amongst the corrupted data. > > Anyone knowing what this little tool was named? Something like > diskcopy, devcopy, I forgot. > > -- > Christoph dd conv=noerror? Yuri
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