Date: Sat, 5 Apr 2008 07:21:43 +0400 (MSD) From: sat@cenkes.org To: d@delphij.net Cc: Maxim Sobolev <sobomax@freebsd.org>, FreeBSD-Chat mailing list <freebsd-chat@freebsd.org> Subject: Re: Program to copy data from a bad disk? Message-ID: <3496.85.141.85.190.1207365703.squirrel@heka.gubkin.ru> In-Reply-To: <47F6D1A8.7080203@delphij.net> References: <47F6C1BD.1090806@delphij.net> <47F6C564.1070500@FreeBSD.org> <47F6D1A8.7080203@delphij.net>
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> Maxim Sobolev wrote: >> 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. > > Ah, great, and especially it's available from LiveFS disc as > /usr/sbin/recoverdisk! If you don't quite like the result, ddrescue (not dd_rescue) is very well-maintained (upstream), and is very fast and smart in comparison to its alternatives. Another good chance to save your data is sadly commercial - SpinRite ($89).
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