0525: Creating a Disk Image on Linux Using DD
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<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>Creating a Disk Image on Linux Using DD</title>
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<h1>Creating a Disk Image on Linux Using DD</h1>
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</div>
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<div></div>
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<div id="content">
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<h2>Creating An Image</h2>
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<ol>
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<li>Insert the SD card or USB flash drive to make an image of</li>
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<li>Run the following commands in a terminal window:
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<div class="codeBlock"># list out disks<br />
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sudo fdisk -l<br />
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# run the following to create a .img, replace sdb with the correct source disk<br />
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sudo dd if=/dev/sdb of=~/flashstorage.img status=progress<br />
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# run the following to create a compressed img, replace sdb with the correct source disk<br />
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sudo dd if=/dev/sdb status=progress | gzip -c >~/flashstorage.img.gz</div>
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</li>
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</ol>
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<h2>Restoring An Image</h2>
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<ol>
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<li>Insert the SD card or USB flash drive to make an image of</li>
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<li>Run the following commands in a terminal window:
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<div class="codeBlock"># list out disks<br />
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sudo fdisk -l<br />
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# run the following to restore an .img to the target device<br />
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# replace sdb with the correct source disk<br />
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# MAKE ABSOLUTELY CERTAIN THE OUTPUT TARGET IS CORRECT<br />
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# OR YOU COULD POTENTIAL DAMAGE YOUR OS<br />
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# restore img<br />
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sudo dd if=~/flashstorage.img of=/dev/sdb bs=4M status=progress<br />
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# restore gzipped img<br />
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gunzip -c ~/flashstorage.img.gz | sudo dd of=/dev/sdb bs=4M status=progress</div>
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</li>
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</ol>
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</div>
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