To uninstall Tails from a USB stick, and use it for something else, you have to reset it.

The content of the USB stick will be lost in the operation, but an attacker might still be able to tell that Tails was installed on that USB stick using data recovery techniques unless you securely clean all the available disk space afterwards.

Using GNOME Disks

Potresti sovrascrivere qualsiasi disco rigido del computer. Se a un certo punto non sei sicuro riguardo a quale dispositivo scegliere, fermati
  1. Make sure that the USB stick that you want to reset is unplugged.

  2. Choose Applications ▸ Utilities ▸ Disks to start GNOME Disks.

    Una lista di tutti i dispositivi del computer appariranno nel pannello di sinistra della finestra.

  3. Plug the USB stick that you want to reset.

    A new device appears in the list of storage devices. This new device corresponds to the USB stick that you plugged in. Click on it.

  4. In the right pane of the window, verify that the device corresponds to the USB stick that you want to reset, its brand, its size, etc.

  5. To reset the USB stick, click on the Menu button in the titlebar and choose Format Disk….

  6. Nella finestra di dialogo Formatta Disco:

    1. Se vuoi cancellare tutti i tuoi dati in maniera sicura, scegli di Overwrite existing data with zeroes nella lista a tendina Erase.

…a. Scegli Compatible with all …systems and devices (MBR/DOS) nella lista a cascata …Partitioning.

…Dopodiché clicca sul bottone Formatta.

  1. Nella schermata di conferma, clicca sul bottone Formatta per confermare.

  2. To make sure that all the changes are written to the USB stick, click on the Eject button in the titlebar.

Resetting a Tails USB stick from itself

If Tails is your only Linux system, you can generally reset a Tails USB stick directly from that USB stick while running Tails.

  1. When starting Tails, add the toram boot option in the Boot Loader Menu. For detailed instructions, see the documentation on using the Boot Loader Menu.

  2. If Tails starts as usual, follow the instructions for resetting a USB stick using GNOME Disks.

    If the system fails to start, that means that the computer does not have enough memory for this operation mode. Try with another computer, or find another Linux system, such as another Tails USB stick, to do the reset from.