en	[[!meta title="Checking the file system of the Persistent Storage"]]

en	In rare occasions, you might have to perform a file system check to repair a broken Persistent Storage.

en	Unlock the Persistent Storage

en	When starting Tails, [[set up an administration password|doc/first_steps/welcome_screen/administration_password]].

en	Choose **Applications**&nbsp;▸ **Utilities**&nbsp;▸ **Disks** to open the *Disks* utility.

en	In the left pane, click on the device corresponding to your Tails USB stick.

en	In the right pane, click on the partition labeled as TailsData LUKS.

en	Click on [[!img lib/network-wireless-encrypted.png alt="Unlock" class="symbolic" link="no"]]</span> to unlock the Persistent Storage. Enter the passphrase of the Persistent Storage and click **Unlock** again.
zh	Klicken Sie auf die Schaltfläche <span class="guimenu">[[!img lib/unlock.png alt="Entsperren" class="symbolic" link="no"]]</span>, um den beständigen Speicherbereich freizuschalten. Geben Sie die Passphrase des beständigen Speicherbereichs ein und klicken Sie auf <span class="guilabel">Entsperren</span>.

en	In the confirmation dialog, enter your administration password and click Authenticate.

en	Click on the TailsData Ext4 partition that appears below the TailsData LUKS partition.

en	Identify the device name of your Persistent Storage. The device name appears below the list of volumes. It should look like `/dev/mapper/luks-xxxxxxxx`.

en	Triple-click to select it and press **Ctrl+C** to copy it to the clipboard.

en	Check the file system using the terminal

en	1. Choose <span class="menuchoice"> <span class="guimenu">Applications</span>&nbsp;▸ <span class="guisubmenu">System Tools</span>&nbsp;▸ <span class="guimenuitem">Root Terminal</span></span> and enter your administration password to open a root terminal.

en	In the terminal, execute the following command. Replace device with the device name found in step 8:

en	fsck -y device

en	To do so, you can type <code>fsck -y&nbsp;</code> and press **Shift+Ctrl+V** to paste the device name from the clipboard.

en	If the file system is free of errors, the last line from the output of `fsck` starts with `TailsData: clean`.

en	If the file system has errors, `fsck` tries to fix them automatically. After it finishes, you can try executing the same command again to check if all errors are solved.