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<h1 id="image">Creating a partition image of your Persistent Storage</h1>
A partition image is a copy of your entire Persistent Storage in a single file that you can save to an external hard disk from Tails.
To save the partition image outside of Tails, you need an external hard disk with as much free space as the size of your Persistent Storage, usually 8&nbsp;GB less than your Tails USB stick. You can also use another USB stick of the same size as your Tails USB stick, but writing to a USB stick is usually much slower than writing to a hard disk.
<div class="caution">
<p>The partition image contains a <i>decrypted</i> version of your
Persistent Storage.</p>
<p>We recommend that you save the partition image to an [[encrypted hard
disk|encryption_and_privacy/encrypted_volumes]].</p>
We are presenting here 2 different techniques to create a partition image of your Persistent Storage.
[[Create a partition image using the *Disks* utility|fsck#disks]]
Try this technique first if the hardware of your USB stick is not failing.
[[Create a partition image using `ddrescue` on the command line|fsck#ddrescue]]
Try this technique first if the hardware of your USB stick is failing.
Using `ddrescue` is more difficult but is better than the *Disks* utility to
recover data if the hardware of your USB stick is failing.
<h2 id="disks">Creating a partition image using the <i>Disks</i> utility</h2>
When the hardware of your USB stick is not failing, using the *Disks* utility is the simplest way of creating a partition image of your Persistent Storage.
<h3 id="external">Preparing the external hard disk</h3>
Start Tails.
In the Welcome Screen:
[[Set up an administration password|doc/first_steps/welcome_screen/administration_password]].
Choose to start without unlocking your Persistent Storage.
Choose **Applications&nbsp;▸ Files** to open the *Files* utility.
Plug in the hard disk on which you want to save the partition image of your Persistent Storage. You need as much free space as the size of your Persistent Storage, usually 8&nbsp;GB less than your Tails USB stick.
A new disk appears in the sidebar of the *Files* utility.
Right-click (on Mac, click with two fingers) on the new volume that appeared in the sidebar of the *Files* utility and choose *Properties* in the shortcut menu.
Take note of the free space in the disk.
<h3 id="identify">Identifying your Persistent Storage in the <i>Disks</i> utility</h3>
Choose **Applications&nbsp;▸ Utilities&nbsp;▸ Disks** to open the *Disks* utility.
In the left pane of the *Disks* utility, identify your Tails USB stick in the list of storage devices.
Verify its brand and size.
In the left pane, click on the storage device that corresponds to your Tails USB stick.
In the right pane, this storage device should have 2 volumes, corresponding to 2 partitions on the USB stick.
1 volume with a **TAILS** label and **FAT** content.

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  2. wiki/src/doc/persistent_storage/fsck.*.po
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