Hardware<h2 id="computer">System requirements:</h2>

<h2 id="computer">System requirements</h2>

<p>Tails mightdoes not work on:</p>

Tails does not work on:

<ul>
<li>Some older computers, for example, if they don't have enough
RAM.</li>
<li>Some newerTails might not work on some PC computers, for example, if their [[graphics card is
not incompatible with Linux|support/known_issues/graphics]].</li>
</ul>
Nvidia or AMD Radeon cards often do not work in Tails.

Tails might not work on some PC computers, for example, if their [[graphics card is incompatible with Linux|support/known_issues/graphics]]. Nvidia or AMD Radeon cards often do not work in Tails.

All the data on this USB stick or DVD will beis lost when installing Tails.

All the data on this USB stick is lost when installing Tails.

You receive the notification **Connection failed: Activation of network connection failed**.

Activation of network connection failed

[iPhones or iPads](https://support.apple.com/en-us/HT204023)<br/> Only sharing mobile data works on iPhones and iPads; sharing Wi-Fi does not work.

Only sharing mobile data works on iPhones and iPads; sharing Wi-Fi does not work.

You cannot access the Internet from Tails until you are connected to Tor. For
example, *Tor Browser* displays the error message <span class="code">P`The proxy
server is refusing connections</span>` until you are connected to Tor.

You cannot access the Internet from Tails until you are connected to Tor. For example, *Tor Browser* displays the error message `The proxy server is refusing connections` until you are connected to Tor.

- [[S For detailed instructions, see how to [[sign in to the network using a
captive portal|unsafe_browser]] - Configure a local proxy.

For detailed instructions, see how to [[sign in to the network using a
captive portal|unsafe_browser]].

Troubleshooting Tor bridges<h2 id="troubleshoot-tor">Troubleshooting connecting to Tor</h2>

<h2 id="troubleshoot-tor">Troubleshooting connecting to Tor</h2>

Using the *Unsafe Browser*<h1 id="security">The <i>Unsafe Browser</i> is not anonymous</h1>

<h1 id="security">The <i>Unsafe Browser</i> is not anonymous</h1>

Us<h1 id="use">Starting the *<i>Unsafe Browser*</i></h1>

<h1 id="use">Starting the <i>Unsafe Browser</i></h1>

Choose aTry visiting an innocent-looking website that is common in your location, for example, a search
engine or news site.
:

Try visiting an innocent-looking website that is common in your location, for example, a search engine or news site:

See also the documentation on <p>See [[connecting to a netwTork|anonymous_internet/networkmanager]].tor]].</p>

<p>See [[connecting to Tor|anonymous_internet/tor]].</p>

<h1 id="files">The <i>Files</i> browser</h1>

- Choose <span class="menuchoice">
**Applications**&nbsp;▸
**To open the *Files* browser, choose **Apps&nbsp;▸ Accessories**&nbsp;▸
**Files**</span>.
Files**.

To open the *Files* browser, choose **Apps&nbsp;▸ Accessories&nbsp;▸ Files**.

To learn how to edit the BIOS or UEFI settings, search for the user manual of
the computer on the support website of the manufacturer.

To learn how to edit the BIOS or UEFI settings, search for the user manual of
the computer on the support website of the manufacturer.

**The content of the USB stick will beis 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|encryption_and_privacy/secure_deletion]] unless you
[[securely clean all the available disk space|doc/encryption_and_privacy/secure_deletion#usb_and_ssd]]
afterwards.
]].

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|doc/encryption_and_privacy/secure_deletion]].

1. If you want to erasoverwrite all data securelyon the device, choose to
**Overwrite existing data with zeroes** in the
**Erase** drop-down list.
menu.

If you want to overwrite all data on the device, choose **Overwrite existing data with zeroes** in the **Erase** menu.

2. Choose **Compatible with all systems and devices (MBR/DOS)**
in the **Partitioning** drop-down list.
menu.

Choose **Compatible with all systems and devices (MBR/DOS)** in the **Partitioning** menu.

b. If there is an <span class="bold">
Erase</span>To reset the USB stick, select the **Erase** button oin the top middle, click on it.
.

To reset the USB stick, select the **Erase** button in the top middle.