Um Tails von einem USB-Stick zu deinstallieren, damit dieser für etwas anderes zu verwendet werden kann, müssen Sie diesen zurücksetzen.

The content of the USB stick is 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.

You might overwrite any hard disk on the computer.

If at some point you are not sure about which device to choose, stop proceeding.

  1. Stellen Sie sicher, dass der USB-Stick, den Sie zurücksetzen möchten, nicht angeschlossen ist.

  2. Starten Sie das Festplattendienstprogramm.

    A list of all the storage devices on the computer appears in the left pane of the window.

  3. Plug in 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 list of storage devices, 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:

    a. If there is an Erase tab in the right pane, click on it and then click on the Erase button on the bottom right

    b. If there is an Erase button on the top middle, click on it.

  6. Wählen Sie im Bestätigungs-Dialogfenster die Schaltfläche Löschen aus, um zu bestätigen.

  7. In the Erase dialog, if you want the USB stick to also work on Windows and Linux, specify:

    • Format: MS-DOS (FAT)
    • Scheme: Master Boot Record
  8. Click Erase.

If the erase process fails, try formatting the USB stick using the command line first.

Resetting a USB stick using the command line

  1. Unplug the USB stick from the computer.

  2. Open the Terminal utility from Applications ▸ Utilities.

  3. Execute the following command.

    diskutil list

    Es wird eine Liste der Speichermedien des Systems ausgegeben. Zum Beispiel:

    /dev/disk0
     #:                     TYPE NAME         SIZE      IDENTIFIER
     0:    GUID_partition_scheme             *500.1 GB  disk0
     1:                      EFI              209.7 MB  disk0s1
     2:                Apple_HFS MacDrive     250.0 GB  disk0s2
     3:                      EFI              134.1 GB  disk0s3
     4:     Microsoft Basic Data BOOTCAMP     115.5 GB  disk0s4
    
  4. Plug in the USB stick that you want to reset.

  5. Execute again the same command.

    diskutil list

    Ihr USB-Stick erscheint als neues Speichermedium in der Liste. Stellen Sie sicher, dass die Größe der Speicherkapazität Ihres USB-Sticks entspricht.

    /dev/disk0
     #:                     TYPE NAME         SIZE      IDENTIFIER
     0:    GUID_partition_scheme             *500.1 GB  disk0
     1:                      EFI              209.7 MB  disk0s1
     2:                Apple_HFS MacDrive     250.0 GB  disk0s2
     3:                      EFI              134.1 GB  disk0s3
     4:     Microsoft Basic Data BOOTCAMP     115.5 GB  disk0s4
    
    /dev/disk1
     #:                     TYPE NAME         SIZE      IDENTIFIER
     0:   FDisk_partition_scheme             *8.0 GB    disk1
     1:                Apple_HFS Untitled 1   8.0 GB    disk1s1
    
  6. Take note of the device name of your USB stick.

    In this example, the USB stick is 8.0 GB and its device name is /dev/disk1. Yours might be different.

    Falls Sie sich bezüglich des Gerätenamens nicht sicher sind, sollten Sie das Vorgehen abbrechen oder Sie riskieren, dass jegliche Festplatten des Systems überschrieben werden.

  7. Execute the following command to safely eject the USB stick. Replace device with the device name found in step 6.

    diskutil unmountDisk device

  8. Execute the following command to format the USB stick. Replace device with the device name found in step 6.

    sudo fdisk -iy device

  9. You can try to reset the USB stick again using Disk Utility from the beginning of this page.