wiki/src/download.html

   1 [[!meta title="Download, verify and install"]]
   2
   3 <strong>Tails is [[Free Software|doc/about/license]], you can download it, use it and
   4 share it without restriction.</strong>
   5
   6 <div id="page-download">
   7
   8 [[!toc levels=1]]
   9
  10 <div id="first_time">
  11
  12         <h1 class="bullet-number-one">First time user?</h1>
  13
  14         <div class="caution">
  15
  16         <ul>
  17         <li>If you don't know what a metadata or a man-in-the-middle attack
  18         is.</li>
  19         <li>If you think no-one can eavesdrop on your communications
  20         because you are using Tor.</li>
  21         <li>If you have no notion of how Tails works.</li>
  22         </ul>
  23
  24         <p><strong>Then, check first the [[about]] and
  25         [[warning|doc/about/warning]] pages to make sure that Tails is the right tool
  26         for you and that you understand well its limitations.</strong></p>
  27
  28         </div>
  29
  30 </div>
  31
  32 <div id="download_iso" class="container">
  33
  34         <h1 class="bullet-number-two">Download the ISO image</h1>
  35
  36         <p>You will download Tails in the form of an <span
  37         class="definition">[[!wikipedia ISO_image desc="ISO image"]]</span>: a
  38         single file that you will later burn on a DVD or install onto a USB
  39         stick or SD card.</p>
  40
  41 <div id="http">
  42
  43         <h2>Direct download</h2>
  44
  45         <h3>Latest release</h3>
  46
  47         <p>
  48         <a class='download-file' href=[[!inline pages="inc/stable_i386_iso_url" raw="yes"]]>
  49         Tails [[!inline pages="inc/stable_i386_version" raw="yes"]] ISO image</a>
  50         </p>
  51
  52         <h3>Cryptographic signature</h3>
  53
  54         [[!inline pages="lib/download_stable_i386_iso_sig" raw="yes"]]
  55
  56         <p>If you're not sure what the cryptographic signature is,
  57         please read the part on [[verifying the ISO
  58         image|download#verify]].</p>
  59
  60         <h3>Set up a web mirror</h3>
  61
  62         <p>If you're running a web server, you're most welcome to help us spread
  63         Tails by [[setting up a web mirror|contribute/how/mirror]].</p>
  64
  65 </div> <!-- #http -->
  66
  67 <div id="bittorrent">
  68
  69         <h2>BitTorrent download</h2>
  70
  71         <h3>Latest release</h3>
  72
  73         <p>
  74         <a class='download-file' href=[[!inline pages="inc/stable_i386_torrent_url" raw="yes"]]>
  75         Tails [[!inline pages="inc/stable_i386_version" raw="yes"]] torrent</a>
  76         </p>
  77
  78         <h3>Cryptographic signature</h3>
  79
  80         <p>The cryptographic signature of the ISO image is also included in the Torrent.</p>
  81
  82         <p>Additionally, you can verify the <a href=[[!inline
  83         pages="inc/stable_i386_torrent_sig_url" raw="yes"]]>signature of
  84         the Torrent file</a> itself before downloading it.</p>
  85
  86         <h3>Seed back!</h3>
  87
  88         <p>Seeding back the image once you have downloaded it is also a nice
  89         and easy way of helping spread Tails.</p>
  90
  91 </div> <!-- #bittorrent -->
  92
  93 </div> <!-- #download_the_image .container -->
  94
  95 <div id="verify">
  96
  97         <h1 class="bullet-number-three">Verify the ISO image</h1>
  98
  99         <p>It is important to check the <span class="definition">[[!wikipedia
 100         Data_integrity desc="integrity"]]</span> of the ISO image you downloaded
 101         to make sure that the download went well.</p>
 102
 103         <div class="caution">
 104
 105         <p>Those techniques rely on standard HTTPS and <span
 106         class="definition">[[!wikipedia Certificate_authority desc="certificate
 107         authorities"]]</span> to make you trust the content of this website.
 108         But, [[as explained on our warning
 109         page|doc/about/warning#man-in-the-middle]], you
 110         could still be victim of a man-in-the-middle attack while using HTTPS.
 111         On this website as much as on any other of the Internet.</p>
 112
 113         <p>As a consequence, <strong>they don't provide you with a
 114         strong way of checking the ISO image <span
 115         class="definition">[[!wikipedia Authentication
 116         desc="authenticity"]]</span> and making sure you downloaded a genuine
 117         Tails.</strong> In a dedicated section, we will propose you some more advanced
 118         techniques to <a href="#authenticity-check">check the authenticity of
 119         the ISO image</a>.</p>
 120
 121         </div>
 122
 123         <p><strong>All Tails ISO image are cryptographically signed by our
 124         OpenPGP key.</strong>
 125         OpenPGP is a standard for data encryption that provides cryptographic
 126         privacy and authentication through the use of keys owned by its users.
 127         Checking this signature is the recommended way of checking the ISO image
 128         integrity.</p>
 129
 130         <p>If you already know how to use an OpenPGP key you can download it
 131         straight away:</p>
 132
 133         [[!inline pages="lib/download_tails_signing_key" raw="yes"]]
 134
 135         <p>Otherwise, read our instructions to check the ISO image integrity:</p>
 136         <ul>
 137           <li>
 138           [[!toggle id="verify_the_iso_image_using_gnome"
 139           text="Using Linux with Gnome: Ubuntu, Debian, Tails, etc."]]
 140           </li>
 141           <li>
 142           [[!toggle id="verify_the_iso_image_using_the_command_line"
 143           text="Using Linux with the command line"]]
 144           </li>
 145           <li>
 146           [[!toggle id="verify_the_iso_image_using_other_operating_systems"
 147           text="Using other operating systems"]]
 148           </li>
 149         </ul>
 150
 151         [[!toggleable id="verify_the_iso_image_using_gnome" text="""
 152         <span class="hide">[[!toggle id="verify_the_iso_image_using_gnome" text=""]]</span>
 153
 154         <h2>Using Linux with Gnome: Ubuntu, Debian, Tails, Fedora, etc.</h2>
 155
 156         [[!inline pages="doc/get/verify_the_iso_image_using_gnome" raw="yes"]]
 157
 158         """]]
 159
 160         [[!toggleable id="verify_the_iso_image_using_the_command_line" text="""
 161         <span class="hide">[[!toggle id="verify_the_iso_image_using_the_command_line" text=""]]</span>
 162
 163         <h2>Using Linux with the command line</h2>
 164
 165         [[!inline pages="doc/get/verify_the_iso_image_using_the_command_line" raw="yes"]]
 166
 167         """]]
 168
 169         [[!toggleable id="verify_the_iso_image_using_other_operating_systems" text="""
 170         <span class="hide">[[!toggle id="verify_the_iso_image_using_other_operating_systems" text=""]]</span>
 171
 172         <h2>Using other operating systems</h2>
 173
 174         [[!inline pages="doc/get/verify_the_iso_image_using_other_operating_systems" raw="yes"]]
 175
 176         """]]
 177
 178         <h2><a id="authenticity-check"></a>So how can I better check the ISO
 179         image authenticity?</h2>
 180
 181         <p>The Tails signing key that you downloaded from this website could
 182         be a fake one if you were victim of a [[man-in-the-middle
 183         attack|doc/about/warning#man-in-the-middle]].</p>
 184
 185         <p>Finding a way of trusting better Tails signing key would allow you to
 186         authenticate better the ISO image you downloaded. The following page
 187         will give you hints on how to increase the trust you can put in the
 188         Tails signing key you downloaded:</p>
 189
 190         <ul>
 191           <li>[[Trusting Tails signing key|doc/get/trusting_tails_signing_key]]</li>
 192         </ul>
 193
 194         <!-- <h2>FIXME: What to do if the image is bad?</h2> -->
 195
 196 </div> <!-- #verify -->
 197
 198 <div id="media">
 199
 200         <h1 class="bullet-number-four">Install or upgrade Tails</h1>
 201
 202         <h2>Upgrading a Tails USB stick or SD card</h2>
 203
 204         <p>If you already have a Tails device, USB stick or SD card, installed
 205         using <span class="application">Tails Installer</span>, then follow our
 206         [[upgrade instructions|doc/first_steps/upgrade]].</p>
 207
 208         <h2>Installing Tails</h2>
 209
 210         <p>You can either burn Tails onto a DVD or install it onto a USB stick or SD card.</p>
 211
 212         <h3>Burning a DVD</h3>
 213         <ul>
 214           <li>DVDs are read-only so your Tails can't be altered by a virus or an
 215           attacker.</li>
 216           <li>DVDs are cheap but you will need to burn a new DVD each time you
 217           update your version of Tails.</li>
 218           <li>You could also use a DVD-RW but those are not read-only.</li>
 219         </ul>
 220
 221         <p>For detailed instructions on how to burn an ISO image under Linux,
 222         Windows or Mac OS X you can consult <a
 223         href="https://help.ubuntu.com/community/BurningIsoHowto">the
 224         corresponding Ubuntu documentation</a>: just replace the Ubuntu ISO
 225         image by the Tails ISO image you downloaded and ignore the part on
 226         verifying the data integrity since you've already done that.</p>
 227
 228         <h3>Installing onto a USB stick or SD card</h3>
 229
 230         <p><strong>The content of the device will be lost in the
 231         operation.</strong></p>
 232
 233         <ul>
 234           <li>An attacker with physical access to your device or through a
 235           virus could alter your Tails.</li>
 236           <li>USB sticks and SD cards can be upgraded to future versions of Tails.</li>
 237           <li>You can use [[persistence|doc/first_steps/persistence]]
 238           and store your documents and configuration in an encrypted
 239           persistent volume on the same device.</li>
 240           <li>USB sticks and SD cards are smaller to fit in your pocket.</li>
 241           <li>Some older computers might not be able to start from a USB stick or SD card.</li>
 242           <li>Some USB sticks, SD cards, or SD card adapters have a
 243           read-only switch that can prevent your Tails from
 244           being altered, but be aware that this protection is most probably not
 245           ensured by the device itself: do not rely on untrusted computers to
 246           respect this feature.</li>
 247         </ul>
 248
 249         <p>[[See the corresponding
 250         documentation.|doc/first_steps/installation]]</p>
 251
 252 </div> <!-- #support -->
 253
 254 <div id="stay_tuned">
 255
 256         <h1 class="bullet-number-five">Stay tuned</h1>
 257
 258         <p>
 259         <strong>It's very important to keep your version of Tails up-to-date, otherwise
 260         your system will be vulnerable to numerous security holes.</strong> The
 261         development team is doing its best to release new versions fixing known
 262         security holes on a regular basis.
 263         </p>
 264
 265         <p>New versions are announced on our <a
 266         href='https://mailman.boum.org/listinfo/amnesia-news'>news
 267         mailing-list</a>. Drop your email address into this box, then hit the
 268         button to subscribe:
 269
 270         <form method="POST" action="https://mailman.boum.org/subscribe/amnesia-news">
 271                 <input class="text" name="email" value=""/>
 272                 <input class="button" type="submit" value="Subscribe"/>
 273                 to the news mailing-list.
 274         </form>
 275         </p>
 276
 277         <p>There also are <a href='/torrents/rss/index.rss'>RSS</a> and
 278         <a href='/torrents/rss/index.atom'>Atom</a> feeds that announce new
 279         available BitTorrent files.</p>
 280
 281         <p>Refer to our [[security announcements|/security]] feed for more
 282         detailed information about the security holes affecting Tails.
 283         Furthermore you will be automatically notified of the security holes
 284         affecting the version you are using at the startup of a new Tails
 285         session.</p>
 286
 287         <p>Since Tails is based on Debian, it takes advantage of all the
 288         work done by the Debian security team. As quoted from <a
 289         href="http://security.debian.org/">(http://security.debian.org/)</a>:</p>
 290
 291         <blockquote>Debian takes security very seriously. We handle all
 292         security problems brought to our attention and ensure that they are
 293         corrected within a reasonable timeframe. Many advisories are coordinated
 294         with other free software vendors and are published the same day a
 295         vulnerability is made public and we also have a Security Audit team that
 296         reviews the archive looking for new or unfixed security bugs.
 297         </blockquote>
 298
 299         <blockquote>Experience has shown that "security through obscurity" does
 300         not work. Public disclosure allows for more rapid and better solutions
 301         to security problems. In that vein, this page addresses Debian's status
 302         with respect to various known security holes, which could potentially
 303         affect Debian.</blockquote>
 304
 305 </div> <!-- #stay_tuned-->
 306
 307 <div id="start">
 308
 309         <h1 class="bullet-number-six">Start Tails!</h1>
 310
 311         <p>Now that you have a Tails device you can shutdown your
 312         computer and start using Tails without altering your existing operating
 313         system.</p>
 314
 315         <p><strong>If you are using a DVD:</strong> Put the Tails DVD into the
 316         CD/DVD-drive and restart the computer. You should see a welcome screen
 317         prompting you to choose your language.</p>
 318
 319         <p>If you don't get this menu, you can consult the Ubuntu documentation
 320         about <a href="https://help.ubuntu.com/community/BootFromCD">booting
 321         from the CD</a> for more information, especially the part on the <a
 322         href="https://help.ubuntu.com/community/BootFromCD#BIOS%20is%20not%20set%20to%20boot%20from%20CD%20or%20DVD%20drive">
 323         BIOS settings</a>.</p>
 324
 325         <p><strong>If you are using a USB stick or SD card:</strong> Shutdown the computer,
 326         plug your device and start the computer. You should see a welcome
 327         screen prompting you to choose your language.</p>
 328
 329         <p>If your computer does not automatically do so, you might need to edit
 330         the BIOS settings. Restart your computer, and watch for a message
 331         telling you which key to press to enter the BIOS setup. It will usually
 332         be one of F1, F2, DEL, ESC or F10. Press this key while your computer is
 333         booting to edit your BIOS settings. You need to edit the Boot Order.
 334         Depending on your computer you should see an entry for 'removable drive'
 335         or 'USB media'. Move this to the top of the list to force the computer
 336         to attempt to start from your device before starting from the internal hard disk. Save your
 337         changes and continue.</p>
 338
 339         <p>For more detailed instruction on how to boot from USB you can read <a
 340         href="http://pcsupport.about.com/od/tipstricks/ht/bootusbflash.htm">About.com:
 341         How To Boot your Computer from a Bootable USB Device</a></p>
 342
 343         <p>If you have problems accessing the BIOS, try to read <a
 344         href="http://www.pendrivelinux.com/how-to-access-bios/">pendrivelinux.com:
 345         How to Access BIOS</a></p>
 346
 347 </div><!-- #boot" -->
 348 </div> <!-- #download -->
 349