https://www.marcelpost.com/wiki/index.php?action=history&feed=atom&title=Dd-mount-tar 2026-05-17T04:17:39Z Revision history for this page on the wiki MediaWiki 1.39.17 https://www.marcelpost.com/wiki/index.php?title=Dd-mount-tar&diff=1265&oldid=prev 2013-12-23T01:00:15Z

<p></p> <p><b>New page</b></p><div>* Extract from a .tar.gzipped dd file straight to another device<br /> <br /> When creating a dd image of a whole disk it can be worthwhile compressing it using .tar.gz<br /> <br /> The resulting file can still be extracted and dd&#039;ed to a new disk all in one go:<br /> <br /> # tar xz0f disk-image_dd.tar.gz | dd of=/dev/sda bs=1M<br /> <br /> <br /> <br /> * To watch the progress of an ongoing dd command, send it the -USR1 kill signal:<br /> <br /> - find the pid of the dd command<br /> - send the kill command: <br /> <br /> # kill -USR1 &lt;pid&gt;<br /> <br /> This will not kill the running dd process, it&#039;s just a method of communicating signals to the dd program.<br /> <br /> <br /> * mount a partition inside a whole-disk dd image<br /> <br /> - install parted if you haven&#039;t done so already<br /> - run parted on the dd file<br /> - switch to bytes &#039;unit B&#039;<br /> - print the partition table &#039;print&#039;<br /> - take note of the Start value of the partition you wish to mount (drop the &#039;B&#039; at the end of the number!)<br /> - quit parted &#039;quit&#039;<br /> - mount the partition using the offset argument<br /> <br /> # mount whole-disk.dd -o loop,offset=&lt;startposition&gt; /mnt/partition<br /> <br /> <br /> * mount a partition inside a tar.gzipped whole-disk dd image<br /> <br /> - use the above technique to obtain the offset for the partition you wish to mount<br /> - install kpartx if you haven&#039;t done so already<br /> <br /> (http://unix.stackexchange.com/questions/31669/is-it-possible-to-mount-a-gzip-compressed-dd-image-on-the-fly)</div>

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