Xubuntu 14.04 Trusty Installing TestDisk for Partition/Disk Recovery
How to Install and Getting Started with TestDisk Partitions Scan and Disk Recovery Tools on Xubuntu 14.04 Trusty Tahr LTS i386/amd64 Linux.
Inside the Article you’ll Find a Link to Detailed Guide on Get Started Scanning and Recovering Partitions on Xubuntu Linux.

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Open Xubuntu Software Center.
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Search for: “Partition scanner”.
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Select the Package and Click on Install.
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Getting Started Recover Disk Partitions on Xubuntu
This recovery example guides you through TestDisk step by step to recover a missing partition and repair a corrupted one.