Exit Zen
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Verify that the content of the volume is of type **LUKS Encryption**.
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<p>If unlocking fails at this step, your Persistent Storage is so damaged
that decryption is impossible, making all your data completely
unrecoverable.</p>
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In the right pane, click on the new volume that appears below the **LUKS** volume.
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Verify that the content of the new volume is of type **Ext4**.
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This volume corresponds to the decrypted version of your Persistent Storage.
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Verify that the size of your decrypted Persistent Storage is smaller than the available free space in the external hard disk.
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Take note of the device name of your Persistent Storage.
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The device name is composed of `/dev/mapper/luks`, followed by letters and numbers.
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<h3 id="create">Creating the partition image</h3>
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After the creation of the partition image finishes:
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If the creation succeeded, shutdown Tails.
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You can now safely start [[recovering data from the Persistent
Storage|fsck#welcome]].
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If the creation failed, try the second technique described below to [[create a partition image using `ddrescue` on the command line|fsck#ddrescue]] instead.
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<h2 id="ddrescue">Creating a partition image using <span class="code">ddrescue</span> on the command line</h2>
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If creating a partition image using the *Disks* utility fails, you can try this second technique using `ddrescue`, which can be more resilient to hardware failures.
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The `ddrescue` utility tries to copy first the parts of the Persistent Storage that are not failing and skips over the parts that are failing. After that, you can run `ddrescue` again to try to copy the parts that failed the first time.
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In the *Files* utility, navigate to the folder of the external hard where you want to save the partition image of your Persistent Storage.
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Right-click in the empty space of the right pane and choose **Open in Terminal** in the shortcut menu.
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Doing so opens a terminal that is configured to operate in this folder.
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In the terminal, execute the following command. Replace <span class="command-placeholder">/dev/mapper/luks-xyz</span> with the device name found when [[identifying your *Persistent Storage* in the *Disks* utility|fsck#identify]].
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