Date: Fri, 04 Apr 2008 17:18:44 -0700 From: Maxim Sobolev <sobomax@FreeBSD.org> To: d@delphij.net Cc: FreeBSD-Chat mailing list <freebsd-chat@FreeBSD.org> Subject: Re: Program to copy data from a bad disk? Message-ID: <47F6C564.1070500@FreeBSD.org> In-Reply-To: <47F6C1BD.1090806@delphij.net> References: <47F6C1BD.1090806@delphij.net>
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LI Xin wrote: > Hi, > > Recently my hard drive goes bad again, which has a lot of bad sectors > for unknown reasons. I am looking for some software that is capable of > doing a sector-to-sector copy of the hard drive. > > I have tried dd but with conv=noerror,sync it would just fill 0's for > the whole block size (say, in order to get best speed you will want > bs=128k or even larger, but that means that you will lose data when 1 > of these 256 sectors is bad). Is there any program that is smarter > which do a sector-to-sector copy for these failed blocks and use larger > transfer buffer for others? The src/tools/tools/recoverdisk does exactly that. Regards, -- Maksym Sobolyev Sippy Software, Inc. Internet Telephony (VoIP) Experts T/F: +1-646-651-1110 Web: http://www.sippysoft.com
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