Published at LXer:
Whether you're trying to rescue data from a dying storage drive, backing up archives to remote storage, or making a perfect copy of an active partition somewhere else, you'll need to know how to safely and reliably copy drives and filesystems. Fortunately, dd is a simple and powerful image-copying tool that's been around, well, pretty much forever. And in all that time, nothing's come along that does the job better.
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