Need good disk dump utility

Paul Koning pkoning at equallogic.com
Mon Apr 25 09:55:04 CDT 2005


>>>>> "Jules" == Jules Richardson <julesrichardsonuk at yahoo.co.uk> writes:

 Jules> On Mon, 2005-04-25 at 09:44 -0400, Paul Koning wrote:
 >> >>>>> "Vintage" == Vintage Computer Festival <vcf at siconic.com>
 >> writes:
 >> 
 Vintage> Is there anything in Linux that will dump a disk image and
 Vintage> put blank space where bad sectors are?  It's not certain if
 Vintage> dd does this.
 >>  Neither Linux the manpage nor the info for dd is clear on this.
 >> But the NetBSD manpage says that if you say "conv=error" then dd
 >> will omit any bad blocks from the output, while if you say
 >> "conv=error,sync" it will substitute zeroes for bad blocks.

 Jules> That's interesting. I've not seen a mention of an 'error'
 Jules> param before in the *linux* dd man pages, and don't recall it
 Jules> from other platforms that support dd either. There's a
 Jules> *noerror* param though - if set then it allows dd to continue
 Jules> even if it hits a read (and presumably write) error....

Sorry, slip of the finger.  "noerror" is what I meant to say.  So
"conv=noerror,sync" should do the job.

	    paul




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