Avviare in macOS.

Install an intermediary Tails

In this step, you will install an intermediary Tails by copying the Tails ISO image on the first USB stick using a program called Universal USB Installer. the command line. a program called GNOME Disks.

On this intermediary Tails you won't benefit from important features like automatic security upgrades or the possibility to store some of your documents and configuration in an encrypted storage.

All the data on this USB stick will be lost.

Make sure that the first USB stick is unplugged.
Apri Terminale da Applications ▸ Utilities ▸ Terminal.app.
Esegui il comando seguente:

diskutil list

Risponde con una lista di dispositivi d'archiviazione sul sitema. Per sempio:

/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
Connetti la chiave USB al computer.
Esegui di nuovo lo stesso comand:

diskutil list

La tua chiave USB compare come un nuovo dispositivo nella lista. Controlla che la sua dimensione corrisponda a quella della tua chiave USB.

/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
Prendi nota del nome del dispositivo della tua chiave USB. In questo esempio, la chiave USB è di 8.0 GB e il suo nome dispositivo è /dev/disk1. Per te potranno essere differenti.

Se non sei sicura del nome del dispositivo, dovresti fermarti oppure rischi di sovrascrivere un hard disk sul tuo sistema.
Execute the following commands to copy the ISO image that you downloaded earlier to the USB stick.

Replace:
- tails.iso with the path to the ISO image
  
  Se non sei sicura del percorso dell'immagine ISO, puoi inserire il percorso corretto trascinando e rilasciando l'icona dell'immagine ISO dal Finder nel Terminale.
- device with the device name found in step 6
  
  Puoi provare ad aggiungere r prima di disk per velocizzare l'installazione.
diskutil unmountDisk device

dd if=tails.iso of=device bs=16m && sync

Dovresti ottenere qualcosa del tipo:

dd if=/Users/me/tails-amd64-3.0.iso of=/dev/rdisk9 bs=16m && sync

Se non ritorna alcun messaggio di errore, Tails sta venendo copiato sulla chiave USB. La copia richiede un po' di tempo, generalmente alcuni minuti.

Se hai un errore del tipo Permission denied, prova ad aggiungere sudo all'inizio del comando:

sudo dd if=tails.iso of=device bs=16m && sync

Se hai un errore del tipo invalid number ‘16m’, prova a usare invece 16M:

dd if=tails.iso of=device bs=16M && sync

L'installazione è completata una volta che il prompt del comando riappare.

Cool, you now have an intermediary Tails on your first USB stick. You will soon have to restart your computer on this USB stick. It can be a bit tricky, so good luck! But it might not work on your Mac model, so good luck!

Open these instructions on another device

In the next step, you will shut down the computer. To be able to follow the rest of the instructions afterwards, we recommend you either:

Open this page on your smartphone, tablet, or another computer (recommended).
Print the rest of the instructions on paper.
Take note of the URL of this page to be able to come back later:

https://tails.boum.org/install/clone/#back https://tails.boum.org/install/win/usb/#back https://tails.boum.org/install/mac/usb/#back https://tails.boum.org/install/mac/clone/#back https://tails.boum.org/install/mac/dvd/#back https://tails.boum.org/install/debian/usb/#back https://tails.boum.org/install/expert/usb/#back https://tails.boum.org/install/linux/usb/#back https://tails.boum.org/upgrade/clone/#back https://tails.boum.org/upgrade/tails/#back

Restart on the intermediary Tails

Restart on the other Tails

Restart on the Tails DVD

Restart on Tails

Computer restarted on USB stick on the right

Computer restarted on USB stick on the left

USB stick unplugged on the right and computer restarted on USB stick on the left

The following instructions assume that the other Tails that you are installing upgrading from is on a USB stick. You can also install upgrade from a Tails DVD in a similar way.

Make sure that the DVD is inserted in the computer. Shut down the computer while leaving the first USB stick plugged in.

Shut down the computer.

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.
Switch on the computer.

Immediately press-and-hold the Option key (Alt key) until a list of possible startup disks appears.

Choose the DVD and press Enter. The DVD might be labeled Windows like in the following screenshot:

Immediately press-and-hold the Option key (Alt key) until a list of possible startup disks appears.

Choose the USB stick and press Enter. The USB stick appears as an external hard disk and might be labeled EFI Boot or Windows like in the following screenshot:

If only your Macintosh hard drive appears, you can try reinstalling an intermediary Tails from Windows using Universal USB Installer.

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

Most computers do not start on Tails by default. If it does you are lucky. Otherwise, if the computer starts on Debian, Ubuntu, or Linux Mint Windows, Linux, Windows or Linux, refer to the troubleshooting section about Tails not starting at all.

Troubleshooting

Tails does not start at all

The following section applies if the Boot Loader Menu does not appear when starting on a USB stick.

It is quite common for computers not to start automatically on a USB stick with Tails installed. Here are some troubleshooting techniques. You should try them one after the other.

Getting to the boot menu

On most computers, you can press a boot menu key to display a list of possible devices to start from. The following instructions explain how to display the boot menu and start on the USB stick. The following screenshot is an example of such boot menu:

Shut down the computer.
Make sure that the first USB stick is plugged in the computer.

Identify the potential boot menu keys for the computer depending on the computer manufacturer in the following list:

Manufacturer	Key
Acer	Esc, F12, F9
Asus	Esc, F8
Dell	F12
Fujitsu	F12, Esc
HP	Esc, F9
Lenovo	F12, Novo, F8, F10
Samsung	Esc, F12, F2
Sony	F11, Esc, F10
Toshiba	F12
others…	F12, Esc

Switch on the computer.

Immediately press several times the first potential boot menu key identified in step 3.
1. If a boot menu with a list of devices appears, select your USB stick and press Enter.
2. If the computer starts on another operating system, then:
  1. Shut down the computer.
  2. Press-and-hold the potential boot menu key identified in step 3.
  3. Switch on the computer again while holding the potential boot menu key pressed.
    1. If a boot menu with a list of devices appears, select your USB stick and press Enter.
    2. If the computer starts on another operating system or returns an error message, then shut down the computer again and repeat step 4 for all the potential boot menu keys identified in step 3.

If none of the potential boot menu keys identified in step 3 work or if the USB stick does not appear in the list, then try the second troubleshooting technique described below.

Check our list of known issues

Similar problems might have been reported already for your model of computer in our list of known issues.

Edit the BIOS settings

You might need to edit the BIOS settings of the computer.

Search for the user manual of the computer on the website of its manufacturer to learn how to edit the BIOS settings:

In the BIOS settings, try to apply the following changes one by one and restart the computer after each change. Some changes might not apply to certain computer models.

Take note of the changes that you apply to the BIOS settings, to be able to revert them if they prevent the computer to start on its usual operating system.

Edit the Boot Order. Depending on the computer model 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 first USB stick before starting from the internal hard disk.
Disable Fast boot.
If the computer is configured to start with legacy BIOS, try to configure it to start with UEFI. Else, if the computer is configured to start with UEFI, try to configure it to start with legacy BIOS. To do so, try any of the following options if available:
- Enable Legacy mode
- Disable Secure boot (see the Microsoft documentation)
- Enable CSM boot
- Disable UEFI
Try to upgrade the BIOS to the latest version provided by the manufacturer.

Report the problem to our support team

If none of these options work, we are sorry but you might not be able to use Tails on this computer.

Please, send an email to our support team, including the following information:

Which version of Tails are you trying to start?
How did you verify the ISO image?
Which is the brand and model of the computer?
What exactly happens when trying to start? Report the complete error message that appears on the screen, if any.
Are you trying to start Tails on a USB stick or a DVD?
If you are trying to start on a USB stick, which program did you use to install it:
- Universal USB Installer,
- GNOME Disks,
- Tails Installer, or
- dd on the command line?
Note that these are the only supported installation methods.
Have you been able to start Tails successfully on this computer before, from another USB stick or DVD, or with another version of Tails? If so, which ones?
Does the same USB stick or DVD start successfully on other computers?

Black screen with Tails artwork. Boot Loader Menu with two options 'Tails' and 'Tails (Troubleshooting Mode)'.

If your computer fails to start on the intermediary Tails, you can try these other two methods:

If you tried them already but failed as well, then it might currently be impossible to start Tails on your Mac model.

If your computer fails to start on the Tails DVD, then it might currently be impossible to start Tails on your Mac model.

After 30–60 seconds, another screen called Tails Greeter appears.

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

If the computer stops responding or displays other error messages before getting to Tails Greeter, refer to the troubleshooting section about Tails not starting entirely.
Troubleshooting

Tails does not start entirely

The following section applies if the Boot Loader Menu appears but not Tails Greeter when starting Tails.
1. Restart the computer on the first USB stick.
2. In the Boot Loader Menu, choose the Troubleshooting Mode which might work better on some computers.
3. If the Troubleshooting Mode does not work better, restart the computer again on the first USB stick.
4. In the Boot Loader Menu, press TAB. A command line with a list of boot options appears at the bottom of the screen.
5. Press the Backspace key several times to remove the quiet option from the command line.
6. If Tails previously failed to start and displayed the Probing EDD (edd=off to disable)... error, then type edd=off to add this option to the command line.
7. Type debug nosplash to add these options to the command line.
8. To start Tails, press Enter.
9. Hopefully, error messages now appear when starting Tails. You can send them to our support team by email, for example by taking a picture of the last screen and error messages.
10. If the error message is /bin/sh: can't access tty; job control turned off followed by (initramfs), then try removing the live-media=removable option from the boot command line.
  
  If removing live-media=removable allows you to start Tails, please report the problem to our support team. This contributes to improving the list of problematic USB sticks. Then try installing Tails on another USB stick.
Removing the live-media=removable option might be dangerous. If an adversary had access to the computer and installed a malicious Tails on an internal hard disk, the computer might start on the malicious Tails instead of on the USB stick.
In Tails Greeter, select your language and keyboard layout in the Language & Region section. Click Start Tails.
After 15–30 seconds, the Tails desktop appears.

The most difficult part is over! Now grab your second USB stick as it is time to install the final Tails on it.

It is important to install the final Tails as it allows you to store some of your documents and configuration and benefit from automatic security upgrades.

This was a first but important step! Now grab the USB stick on which you want to install Tails.

Install Tails

Install the final Tails

Install Tails on a USB stick

Upgrade your Tails

In this step, you will install the final Tails on a second new USB stick using Tails Installer.

In this step, you will upgrade your Tails from the other intermediary Tails using Tails Installer one last time.

All the data on this USB stick will be lost.

The persistent storage of your Tails USB stick will be preserved.

The persistent storage of the other Tails will not be copied.

Plug the second the new your Tails the USB stick in the computer.
Choose Applications ▸ Tails ▸ Tails Installer to start Tails Installer.
Start Tails Installer:
```
tails-installer
```
Click (None) and choose the ISO image that you downloaded earlier.

Choose the second the new your USB stick in the Target USB stick drop-down list.
To start the installation, click on the Install button. upgrade, click on the Upgrade button.

If your Tails USB stick was not installed using Tails Installer, click on the Install button instead.

If the Install button is unavailable, maybe you forgot to select the Format Fat32 option in Universal USB Installer in step 2.

Restart on Windows and go back to Step 2: Install an intermediary Tails.
Read the warning message in the confirmation dialog. Click Yes to confirm.

The installation upgrade takes a few minutes.

At the end of the installation, you are asked for your administration password twice.

The progress bar usually freezes for some time while synchronizing data on disk.
After the installation finishes, close Tails Installer.

You are done upgrading Tails. You can now shutdown and restart on your Tails USB stick.

Thank you for staying safe!

Restart on the final Tails

Restart on the new Tails

Restart on the Tails USB stick

Shut down the computer.
Unplug the first other USB stick and leave the second new USB stick plugged in.

Eject the DVD and leave the USB stick plugged in.

Switch on the computer.

Immediately press-and-hold the Option key (Alt key) until a list of possible startup disks appears.

'Option' or 'alt' key in the bottom left of Mac keyboard

Choose the USB stick and press Enter. The USB stick appears as an external hard disk and might be labeled EFI Boot or Windows like in the following screenshot:

Screen with the logo of an internal hard disk labeled 'Macintosh HD' and an external hard disk labelled 'Windows' (selected)

Some computers start successfully on the intermediary Tails but fail to start on the final Tails. If this is your case, refer to the troubleshooting section about Tails not starting at all.

Troubleshooting

Tails does not start at all

The following section applies if the Boot Loader Menu does not appear when starting on a USB stick.

It is quite common for computers not to start automatically on a USB stick with Tails installed. Here are some troubleshooting techniques. You should try them one after the other.