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Rescue Failing Drives With SystemRescue

Oct 22, 2011, 18:00 (0 Talkback[s])
(Other stories by Carla Schroder)

"When a hard drive, CD/DVD, USB stick, or any digital storage media is on its way to the Great Bitbucket in the Sky, GNU ddrescue is my favorite data recovery tool. GNU ddrescue is included in the default SystemRescue image. Before we dive into the fun stuff, there is some vexing naming confusion to clear up. There are two ddrescue programs in SystemRescue. GNU ddrescue, by Antonio Diaz, is the one I prefer. The version on the current SystemRescue release is ddrescue 1.14. There is also a dd_rescue, version 1.23, by Kurt Garloff. dd_rescue is nice, but it's slower than ddrescue and doesn't include as many features.

Just to keep it interesting, Debian Linux adds its own bizarre naming conventions. The Debian package name for GNU ddrescue is gddrescue, and the package name for dd_rescue is ddrescue. But the binary for gddrescue is /sbin/ddrescue, and the binary for dd_rescue is /bin/dd_rescue. Fortunately, SystemRescue doesn't mess with the original binary names, and calls them /usr/bin/ddrescue and /bin/dd_rescue.

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