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.
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`.
1. Choose <span class="menuchoice"> <span class="guimenu">Applications</span> ▸ <span class="guisubmenu">System Tools</span> ▸ <span class="guimenuitem">Root Terminal</span></span> and enter your administration password to open a root terminal.
To do so, you can type <span class="command"code>fsck -y </spancode> and press <span class="keycap">**Shift+Ctrl+V</span>** to paste the device name from the clipboard.
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.