Cette page explique les bases et les principes avancés pour démarrer Tails depuis une clé USB sur un PC.

Démarrer depuis Windows 8 ou 10

Depuis Windows ou depuis l'écran de connexion à Windows :

  1. Click on the Start button.

  2. Press and hold the Shift key while you choose Power ▸ Restart.

  3. In the Choose an option screen, choose Use a device.

    If the Choose an option screen does not appear, refer to the instructions on starting Tails using the Boot Menu key.

  4. In the Use a device screen, choose Boot Menu.

    Windows shuts down, the computer restarts, and a Boot Menu appears.

    Plug in your Tails USB stick shortly after choosing Boot Menu and while Windows is shutting down.

    In the future, we We recommend that you only plug in your Tails USB stick while Windows is shutting down. Otherwise, a virus in Windows could infect your Tails USB stick and break its security.

    Such an attack is possible in theory but very unlikely in practice. We don't know of any virus capable of infecting Tails. See our warning on plugging Tails in untrusted systems.

    The Boot Menu is a list of possible devices to start from. The following screenshot is an example of a Boot Menu:

  5. In the Boot Menu, select your USB stick and press Enter.

  6. If the computer starts on Tails, the Boot Loader appears and Tails starts automatically after 4 seconds.

    Black screen ('GNU GRUB') with Tails logo and 2 options: 'Tails' and 'Tails (Troubleshooting Mode)'.

Démarrer avec la touche Menu de démarrage

La plupart des ordinateurs ne démarre pas automatiquement sur la clé USB Tails, mais vous pouvez accéder au menu de Boot du BIOS pour afficher tous les périphériques sur lesquels il est possible de démarrer.

Si Windows 8 ou 10 est aussi installé sur l'ordinateur, vous devez suivre plutôt les instructions pour démarrer Tails depuis Windows 8 ou 10. Démarrer Tails depuis Windows est plus facile qu'en passant par le menu de Boot du BIOS.

L'écran suivant montre un exemple de menu de démarrage :

Cette animation résume l'utilisation du menu de Boot pour démarrer sur la clé USB :

Voici les instructions détaillées pour utiliser le menu de Boot pour démarrer sur la clé USB :

  1. Éteignez l'ordinateur tout en laissant la clé USB branchée.

    Éteindre l'ordinateur et connecter la clé USB Tails.

    Éteindre l'ordinateur.

    Plug in the other Tails USB stick that you want to install upgrade from.

    Unplug your Tails USB stick while leaving the intermediary USB stick plugged in.

  2. Identify the possible Boot Menu keys for the computer depending on the computer manufacturer in the following list:

    FabricantTouche
    AcerÉchap, F12, F9
    AppleOption
    AsusÉchap, F8
    ClevoF7
    DellF12
    FujitsuF12, Échap
    HPF9, Échap
    HuaweiF12
    IntelF10
    LenovoF12, Novo, F8, F10
    MSIF11
    SamsungÉchap, F12, F2
    SonyF11, Échap, F10
    ToshibaF12
    others…F12, Échap

    On many computers, a message is displayed very briefly when switching on that also explains how to get to the Boot Menu or edit the BIOS settings.

  3. Switch on the computer and immediately press several times the first possible Boot Menu key identified in step 2.

  4. If the computer starts on another operating system or returns an error message, shut down the computer again and repeat step 3 for all the possible Boot Menu keys identified in step 2.

    If a Boot Menu with a list of devices appears, select your USB stick and press Enter.

    If the Boot Menu key that works on your computer is a different one than the first in the list, please let us know so we can improve the list. You can write to sajolida@pimienta.org (private email).

  5. If the computer starts on Tails, the Boot Loader appears and Tails starts automatically after 4 seconds.

    Black screen ('GNU
GRUB') with Tails logo and 2 options: 'Tails' and 'Tails (Troubleshooting
Mode)'.

Résoudre Tails qui ne démarre pas du tout

Cette partie concerne le cas où l'ordinateur ne démarre pas sur la clé USB et où le chargeur d'amorçage ne s'affiche pas :

Écran noir avec le logo Tails. Le menu du chargeur d'amorçage avec deux options 'Tails' et 'Tails (Troubleshooting Mode)'.

Vérifiez votre clé USB Tails

  1. Make sure that you have verified your download of Tails.
  2. Try installing again on the same USB stick.
  3. Try installing on a different USB stick.
  4. Try using the same USB stick to start on a different computer.

Vérifier la liste des problèmes connus

Des problèmes identiques ont peut-être déjà été signalés pour le modèle de votre ordinateur dans la liste des problèmes connus.

Modifier les réglage du BIOS (utilisateurs·trices avancés)

Pour modifier vos paramètres de BIOS, référez vous au manuel d'utilisation de l'ordinateur sur le site du fabricant.

Prenez note des changements que vous faites sur les réglages du BIOS afin de pouvoir rétablir les anciens paramètres au cas où il deviendrait impossible de démarrer l'ordinateur sur son système d'exploitation habituel.

In the BIOS settings, try to apply the following changes. Some changes might not apply to certain computer models.

  • Il se peut qu'une option du BIOS permette d'activer le raccourci pour le menu de Boot. Assurez vous qu'elle est bien activée. Cette option peut avoir par exemple pour nom Boot Device List selon l'ordinateur.

  • Edit the Boot Order. Depending on the computer, you might see an entry for Removable devices or USB media. Move this entry to the top of the list to force the computer to try to start from the USB stick before starting from the internal hard disk.

  • Désactiver le démarrage rapide (Fast boot).

  • Activer l'option de démarrage « CSM » (CSM boot)

  • Activer le Legacy boot en plus de l'UEFI. L'ordinateur pourrait ne plus démarrer du tout sur le système d'exploitation habituel si vous désactivez complètement l'UEFI ou que vous activez uniquement le Legacy

  • En dernier recours, vous pouvez mettre à jour votre BIOS. Référez vous à la documentation de votre ordinateur sur le site du fabricant.

Signaler le problème à notre équipe d'assistance

If none of these options work, we are sorry but you might not be able to use Tails on this computer. Feel free to report the problem to our help desk.

Please send the following information to tails-support-private@boum.org:

  1. Which version of Tails are you trying to start?

  2. How did you verify the USB image?

  3. What is the brand and model of your computer?

  4. What exactly happens when trying to start? Report the complete error message that appears on the screen, if any.

  5. What program did you use to install your USB stick?

  6. Does the USB stick start successfully on other computers? If so, what are the brands and models of those computers?

  7. Have you been able to successfully start another version of Tails on this computer before? If so, which version?

We answer requests in:

  • English
  • French
  • Spanish
  • Italian

Requests not in English might take longer to answer. Imperfect English is welcome :)

Correction de problèmes : Tails ne démarre pas après le chargeur d'amorçage

The following section applies when the Boot Loader appears but not the Welcome Screen when starting Tails.

Verify your Tails USB stick

  1. Make sure that you have verified your download of Tails.
  2. Try installing again on the same USB stick.
  3. Try installing on a different USB stick.
  4. Try using the same USB stick to start on a different computer.

Check our list of known issues on graphics cards

If the computer displays the error message Error starting GDM with your graphics card, refer to our list of known issues with graphics cards.

Try the Troubleshooting Mode

  1. In the Boot Loader, choose the Troubleshooting Mode which might work better on some computers.

  2. If the Troubleshooting Mode does not work better, restart the computer again on your Tails USB stick.

Add boot options

  1. Depending on whether the Boot Loader is GRUB or SYSLINUX:

    If the Boot Loader is GRUB:

    1. Press e when GRUB appears.

      A new screen appears with more options.

      GRUB with a list of
 options starting with 'setparams Tails'

      If your Boot Loader looks different, refer to our instructions below on adding a boot option using SYSLINUX.

    2. Navigate with the arrows of the keyboard to the end of the line that starts with linux. The line is most likely wrapped and displayed on several lines on the screen but it is a single configuration line.

    3. Press the Backspace key several times to remove the quiet option from the command line.

    4. Type debug nosplash to add these options to the command line.

    5. If Tails previously failed to start and displayed the following error:

      Probing EDD (edd=off to disable)...

      Then type edd=off to add this option to the command line.

    6. Press Ctrl+X, F10, or Fn+F10 to start Tails.

    7. Hopefully, new error messages now appear when starting Tails. You can send them to our help desk by email, for example by taking a picture of the last screen and error messages.

    If the Boot Loader is SYSLINUX:

    1. Press Tab. A command line with a list of boot options appears at the bottom of the screen.

      SYSLINUX with
 a list of options starting with '/live/vmlinuz' at the bottom

      If your Boot Loader looks different, refer to our instructions on adding a boot option using GRUB above.

    2. Press the Backspace key several times to remove the quiet option from the command line.

    3. Type debug nosplash to add these options to the command line.

    4. If Tails previously failed to start and displayed the following error:

      Probing EDD (edd=off to disable)...

      Then type edd=off to add this option to the command line.

    5. Press Enter to start Tails.

    6. Hopefully, new error messages now appear when starting Tails. You can send them to our help desk by email, for example by taking a picture of the last screen and error messages.