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2<!DOCTYPE sections SYSTEM "/dtd/book.dtd"> 2<!DOCTYPE sections SYSTEM "/dtd/book.dtd">
3 3
4<!-- The content of this document is licensed under the CC-BY-SA license --> 4<!-- The content of this document is licensed under the CC-BY-SA license -->
5<!-- See http://creativecommons.org/licenses/by-sa/2.5 --> 5<!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
6 6
7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-alpha-medium.xml,v 1.57 2012/02/26 09:49:46 swift Exp $ --> 7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-alpha-medium.xml,v 1.65 2014/01/23 19:32:49 swift Exp $ -->
8 8
9<sections> 9<sections>
10 10
11<version>15</version> 11<version>22</version>
12<date>2012-02-26</date> 12<date>2014-01-23</date>
13 13
14<section> 14<section>
15<title>Hardware Requirements</title> 15<title>Hardware Requirements</title>
16<subsection> 16<subsection>
17<title>Introduction</title> 17<title>Introduction</title>
176<p> 176<p>
177You might find a Package CD on one of our mirrors. This CD is not an 177You might find a Package CD on one of our mirrors. This CD is not an
178Installation CD but an additional resource that can be exploited during a 178Installation CD but an additional resource that can be exploited during a
179networkless installation. It contains prebuilt packages (also known as the GRP 179networkless installation. It contains prebuilt packages (also known as the GRP
180set) that allow you to easily and quickly install additional applications 180set) that allow you to easily and quickly install additional applications
181(such as OpenOffice.org, KDE, GNOME, ...) immediately after the networkless 181(such as LibreOffice.org, KDE, GNOME, ...) immediately after the networkless
182Gentoo installation. 182Gentoo installation.
183</p> 183</p>
184 184
185<p> 185<p>
186If you intend to use the Packages CD to quickly install additional software, 186If you intend to use the Packages CD to quickly install additional software,
198to continue the Gentoo installation using the instructions in this manual. 198to continue the Gentoo installation using the instructions in this manual.
199Previously, the Gentoo Handbook described the installation using one of three 199Previously, the Gentoo Handbook described the installation using one of three
200stage tarballs. While Gentoo still offers stage1 and stage2 tarballs, the 200stage tarballs. While Gentoo still offers stage1 and stage2 tarballs, the
201official installation method uses the stage3 tarball. If you are interested in 201official installation method uses the stage3 tarball. If you are interested in
202performing a Gentoo installation using a stage1 or stage2 tarball, please read 202performing a Gentoo installation using a stage1 or stage2 tarball, please read
203the Gentoo FAQ on <uri link="/doc/en/faq.xml#stage12">How do I Install Gentoo 203the Gentoo FAQ on <uri link="https://wiki.gentoo.org/wiki/FAQ/#How_do_I_Install_Gentoo_Using_a_Stage1_or_Stage2_Tarball.3F">How
204Using a Stage1 or Stage2 Tarball?</uri> 204do I Install Gentoo Using a Stage1 or Stage2 Tarball?</uri>
205</p> 205</p>
206 206
207<p> 207<p>
208Stage3 tarballs can be downloaded from <path><keyval 208Stage3 tarballs can be downloaded from <path><keyval
209id="release-dir"/>current-stage3/</path> on any of the <uri 209id="release-dir"/>current-stage3/</path> on any of the <uri
238can write on a CD-R. 238can write on a CD-R.
239</p> 239</p>
240 240
241<p> 241<p>
242In case you wonder if your downloaded file is corrupted or not, you can check 242In case you wonder if your downloaded file is corrupted or not, you can check
243its MD5 checksum and compare it with the MD5 checksum we provide (such as 243its SHA-2 checksum and compare it with the SHA-2 checksum we provide (such as
244<path><keyval id="min-cd-name"/>.DIGESTS</path>). You can check the MD5 checksum 244<path><keyval id="min-cd-name"/>.DIGESTS</path>). You can check the SHA-2 checksum
245with the <c>md5sum</c> tool under Linux/Unix or <uri 245with the <c>sha512sum</c> tool under Linux/Unix or <uri
246link="http://www.etree.org/md5com.html">md5sum</uri> for Windows. 246link="http://www.sinf.gr/en/hashcalc.html">Checksums calculator</uri> for Windows.
247</p>
248
249<note>
250The tool will attempt to verify the checksums in the list, even if the checksum
251is made with a different algorithm. Therefore, the output of the command might
252give both success (for SHA checksums) and failures (for other checksums). At
253least one OK needs to be provided for each file.
254</note>
255
256<pre caption="Verifying the SHA-2 checksum">
257$ <i>sha512sum -c &lt;downloaded iso.DIGESTS&gt;</i>
247</p> 258</pre>
259
260<note>
261If you get the message that no properly formatted SHA checksum was found, take a
262look at the DIGESTS file yourself to see what the supported checksums are.
263</note>
248 264
249<p> 265<p>
250Another way to check the validity of the downloaded file is to use GnuPG to 266Another way to check the validity of the downloaded file is to use GnuPG to
251verify the cryptographic signature that we provide (the file ending with 267verify the cryptographic signature that we provide (the file ending with
252<path>.asc</path>). Download the signature file and obtain the public keys: 268<path>.asc</path>). Download the signature file and obtain the public keys whose
269key ids can be found on the <uri link="/proj/en/releng/index.xml">release
270engineering project site</uri>.
253</p> 271</p>
254 272
255<pre caption="Obtaining the public key"> 273<pre caption="Obtaining the public key">
274<comment>(... Substitute the key ids with those mentioned on the release engineering site ...)</comment>
256$ <i>gpg --keyserver subkeys.pgp.net --recv-keys 96D8BF6D 2D182910 17072058</i> 275$ <i>gpg --keyserver subkeys.pgp.net --recv-keys 96D8BF6D 2D182910 17072058</i>
257</pre> 276</pre>
258 277
259<p> 278<p>
260Now verify the signature: 279Now verify the signature:
261</p> 280</p>
262 281
263<pre caption="Verify the files"> 282<pre caption="Verify the files">
264<comment>(Verify the cryptographic signature)</comment>
265$ <i>gpg --verify &lt;downloaded iso.DIGESTS.asc&gt;</i> 283$ <i>gpg --verify &lt;downloaded iso.DIGESTS.asc&gt;</i>
266<comment>(Verify the checksum)</comment>
267$ <i>sha1sum -c &lt;downloaded iso.DIGESTS.asc&gt;</i> 284$ <i>sha512sum -c &lt;downloaded iso.DIGESTS.asc&gt;</i>
268</pre> 285</pre>
269 286
270<p> 287<p>
271To burn the downloaded ISO(s), you have to select raw-burning. How you 288To burn the downloaded ISO(s), you have to select raw-burning. How you
272do this is highly program-dependent. We will discuss <c>cdrecord</c> and 289do this is highly program-dependent. We will discuss <c>cdrecord</c> and
273<c>K3B</c> here; more information can be found in our <uri 290<c>K3B</c> here; more information can be found in our <uri
274link="/doc/en/faq.xml#isoburning">Gentoo FAQ</uri>. 291link="https://wiki.gentoo.org/wiki/FAQ#How_do_I_burn_an_ISO_file.3F">Gentoo FAQ</uri>.
275</p> 292</p>
276 293
277<ul> 294<ul>
278 <li> 295 <li>
279 With cdrecord, you simply type <c>cdrecord dev=/dev/hdc &lt;downloaded iso 296 With cdrecord, you simply type <c>cdrecord dev=/dev/sr0 &lt;downloaded iso
280 file&gt;</c> (replace <path>/dev/hdc</path> with your CD-RW drive's 297 file&gt;</c> (replace <path>/dev/sr0</path> with your CD-RW drive's
281 device path). 298 device path).
282 </li> 299 </li>
283 <li> 300 <li>
284 With K3B, select <c>Tools</c> &gt; <c>Burn CD Image</c>. Then you can locate 301 With K3B, select <c>Tools</c> &gt; <c>Burn CD Image</c>. Then you can locate
285 your ISO file within the 'Image to Burn' area. Finally click <c>Start</c>. 302 your ISO file within the 'Image to Burn' area. Finally click <c>Start</c>.

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