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Re: [Bug-ddrescue] Merging two images from the same recovery....

From: Antonio Diaz Diaz
Subject: Re: [Bug-ddrescue] Merging two images from the same recovery....
Date: Mon, 19 Dec 2011 18:12:47 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv:1.7.11) Gecko/20050905

Hello Mike,

Dependable-Mike wrote:
So now I have two partial images of the drive that mostly don't overlap...
and two matching log files to go with them that define the good areas and
slow areas skipped.

The best way of merging two images is using the "-m, --domain-logfile" option. It restricts the rescue domain to the blocks marked as finished in the given logfile, so it will copy to the target image only what has been already rescued in the source image.

If you issued the commads:

  cd dir1
  ddrescue -n -a<something> /dev/hda image logfile

and then

  cd dir2
  ddrescue -n -a<something> /dev/hda image logfile

you can merge the images by typing:

  cd dir1
  ddrescue -m dir2/logfile dir2/image image logfile

This creates the files dir1/logfile dir1/image with all the data currently rescued. Then you can continue the rescue for example like this:

  cd dir1
  ddrescue -n -a<something> /dev/hda image logfile
  ddrescue -d r1 /dev/hda image logfile

PS the new features of RC1 are great and are working as expected for me with
no problems. The only problems I'm facing are operator induced! ;O)

Thanks for the feedback.


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