Date: Fri, 14 Nov 1997 18:56:26 GMT From: Frank Terhaar-Yonkers <fty@cisco.com> To: aic7xxx@FreeBSD.ORG, coyote@step.polymtl.ca Subject: Re: AHAX94X/copying 2 drives. Message-ID: <199711141856.SAA02045@fty-ss20.cisco.com>
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I've had drives that were so "bad" that I could read them sequentially via dd, but dump would cause them to barf. The "safest" approach IMHO, would be to use dd from drive a -> b. Then use dump from drive b to make a good backup copy, then label/newfs drive b to use the appropriate size and geometry, finally restore to drive b. - Frank > This is not exactly aic7xxx-related but since this will happen on >Linux+X940, I'd like to ask my question here: > > I have a computer with both a 3940 and a 2940UW. On the 2940UW is >a 9.1GB Atlas II (UW). I am getting the latter drive replaced (excellent >drive but strange noises, the heat of this summer could have been the >cause). > > Technically speaking, what should be the best way to -copy- data >from the old drive to the new one? Is it generally a good idea to "dd >if=/dev/sdc of=/dev/sdd bs=512" (regardless of the actual number of >good/bad sectors?) or should I just recreate the partitions, mount them in >the correct trees and then "cp -dpRv /mnt1 to /mnt2"? > > I actually feel like trying the second method, it has worked fine >for me for several GB of data already and at least gives the ability of >"verifying" the surface when mke2fs'ing with "-c". > > What do you people think? Thanks for reading. Of course, we don't >want to lose data... > >,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-, >Vincent S. Cojot, Computer Engineering. STEP project. _.,-*~'`^`'~*-,._.,-*~ >Ecole Polytechnique de Montreal, Comite Micro-Informatique. _.,-*~'`^`'~*-,. >Linux Xview/OpenLook resources page _.,-*~'`^`'~*-,._ coyote@info.polymtl.ca >http://www.info.polymtl.ca/~coyote _.,-*~'`^`'~*-,._ coyote@step.polymtl.ca > >They cannot scare me with their empty spaces >Between stars - on stars where no human race is >I have it in me so much nearer home >To scare myself with my own desert places. - Robert Frost > > > \\\\////\\\\////\\\\\////\\\\\////\\\\////\\\\////\\\\////\\\\////\\\\////\\\\ Frank Terhaar-Yonkers Cisco Systems, Inc. Engineering Computer Services, W2 F3 5 7025 Kit Creek Road PO Box 14987 Research Triangle Park, North Carolina 27709 fty@cisco.com voice (919)472-2101 FAX (919)472-2940 pager (800)796-7363 pin 1008366 -or- fty@airnote.net
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