1. Choose Applications ▸ Persistent Storage.

  2. Click on the Change Passphrase button on the left of the title bar.

  3. Enter the current passphrase in the Current Passphrase text box.

  4. Enter your new passphrase in the New Passphrase text box.

  5. Enter your new passphrase again in the Confirm New Passphrase text box.

  6. Click Change.

  7. Close the Persistent Storage settings.