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7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-ppc-medium.xml,v 1.48 2005/10/09 16:33:54 swift Exp $ --> 7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-ppc-medium.xml,v 1.49 2005/11/11 17:27:15 swift Exp $ -->
8 8
9<sections> 9<sections>
10 10
11<version>2.6</version> 11<version>2.7</version>
12<date>2005-10-09</date> 12<date>2005-11-11</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>
78</body> 78</body>
79</subsection> 79</subsection>
80</section> 80</section>
81<!-- Copy/paste from hb-install-x86-medium.xml (with s/x86/ppc/) --> 81<!-- Copy/paste from hb-install-x86-medium.xml (with s/x86/ppc/) -->
82<!-- START --> 82<!-- START -->
83<section>
84<title>The Gentoo Installation Approaches</title>
85<subsection>
86<title>Introduction</title>
87<body>
88
89<p>
90Gentoo Linux can be installed using one of three <e>stage</e> tarball files.
91A stage file is a tarball (compressed archive) that contains a minimal
92environment.
93</p>
94
95<ul>
96 <li>
97 A stage1 file contains nothing more than a compiler, Portage (Gentoo's
98 software management system) and a couple of packages on which the compiler
99 or Portage depends.
100 </li>
101 <li>
102 A stage2 file contains a so-called bootstrapped system, a minimal
103 environment from which one can start building all other necessary
104 applications that make a Gentoo environment complete.
105 </li>
106 <li>
107 A stage3 file contains a prebuilt minimal system which is almost fully
108 deployable. It only lacks a few applications where you, the Gentoo user,
109 needs to choose which one you want to install.
110 </li>
111</ul>
112
113<p>
114To help you decide what stage file you want to use, we have written down the
115major advantages and disadvantages of each stage file.
116</p>
117
118</body>
119</subsection>
120<subsection>
121<title>A Stage1 Approach</title>
122<body>
123
124<p>
125A <e>stage1</e> is used when you want to bootstrap and build the entire system
126from scratch.
127</p>
128
129<p>
130This approach builds core system packages that are vital to your system and is
131used by Gentoo developers to prepare the Gentoo release media. It is a great
132installation method for those who would like to learn more about the inner
133workings of bootstrapping, toolchains and the like.
134</p>
135
136<p>
137However, if you do not plan to tweak the bootstrapping instructions in the
138<path>bootstrap.sh</path> script written by the Gentoo developers, then a
139stage1 approach has no benefits for you.
140</p>
141
142<table>
143<tr>
144 <th>Stage1</th>
145 <th>Pros and Cons</th>
146</tr>
147<tr>
148 <th>+</th>
149 <ti>
150 Allows you to have total control over the installation routine, bootstrap
151 sequence, etc.
152 </ti>
153</tr>
154<tr>
155 <th>+</th>
156 <ti>Suitable for powerusers and developers who know what they are doing</ti>
157</tr>
158<tr>
159 <th>-</th>
160 <ti>
161 Takes a long time to finish the installation (it is the lengthiest approach)
162 </ti>
163</tr>
164<tr>
165 <th>-</th>
166 <ti>
167 If you don't intend to tweak the settings, it is a waste of time
168 </ti>
169</tr>
170<tr>
171 <th>-</th>
172 <ti>
173 Requires a working Internet connection during the installation
174 </ti>
175</tr>
176</table>
177
178</body>
179</subsection>
180<subsection>
181<title>A Stage2 Approach</title>
182<body>
183
184<p>
185A <e>stage2</e> is used for building the entire system from a bootstrapped
186"semi-compiled" state.
187</p>
188
189<p>
190When you perform a stage2 installation approach, you will build all system
191packages (core packages, including toolchain) using your specific <c>USE</c>,
192<c>CFLAGS</c> and <c>CXXFLAGS</c> settings. Any package build will therefore be
193optimized to your preference.
194</p>
195
196<p>
197However, this installation takes some time and if you do not intend to change
198the <c>CFLAGS</c> and <c>CXXFLAGS</c> settings that we have defined as a "good
199default", using this approach only makes sense if your <c>USE</c> variable is
200sufficiently different from the default <c>USE</c> we provide.
201</p>
202
203<table>
204<tr>
205 <th>Stage2</th>
206 <th>Pros and Cons</th>
207</tr>
208<tr>
209 <th>+</th>
210 <ti>You don't need to bootstrap</ti>
211</tr>
212<tr>
213 <th>+</th>
214 <ti>Faster than starting with stage1</ti>
215</tr>
216<tr>
217 <th>+</th>
218 <ti>You can still tweak your settings</ti>
219</tr>
220<tr>
221 <th>-</th>
222 <ti>It's still not the fastest way to install Gentoo</ti>
223</tr>
224<tr>
225 <th>-</th>
226 <ti>
227 Requires a working Internet connection during the installation
228 </ti>
229</tr>
230</table>
231
232</body>
233</subsection>
234<subsection>
235<title>A Stage3 Approach</title>
236<body>
237
238<p>
239A <e>stage3</e> installation contains a basic Gentoo Linux system that has been
240built for you. You will only need to build a few packages (such as system
241logger, networking tools, ...) before you can boot into a base Gentoo
242installation.
243</p>
244
245<p>
246Choosing to go with a stage3 allows for the fastest install of Gentoo
247Linux, but also means that your base system will have the optimization
248settings that we chose for you (which to be honest, are good settings
249and were carefully chosen to enhance performance while maintaining
250stability). Stage3 is also required if you want to install Gentoo using
251prebuilt packages or without a network connection.
252</p>
253
254<table>
255<tr>
256 <th>Stage3</th>
257 <th>Pros and Cons</th>
258</tr>
259<tr>
260 <th>+</th>
261 <ti>Fastest way to get a Gentoo base system</ti>
262</tr>
263<tr>
264 <th>+</th>
265 <ti>
266 You can still tweak your system
267 </ti>
268</tr>
269</table>
270
271<p>
272You might be interested to know that, if you decide to use different
273optimization settings after having installed Gentoo, you will be able to
274recompile your entire system with the new optimization settings. The same goes
275for any <c>USE</c> flag changes: Portage is intelligent enough to know what
276packages need to be rebuild.
277</p>
278
279</body>
280</subsection>
281</section>
282
283<section> 83<section>
284<title>The Gentoo Installation CDs</title> 84<title>The Gentoo Installation CDs</title>
285<subsection> 85<subsection>
286<title>Introduction</title> 86<title>Introduction</title>
287<body> 87<body>
317 CD which sole purpose is to boot the system, prepare the networking and 117 CD which sole purpose is to boot the system, prepare the networking and
318 continue with the Gentoo installation. 118 continue with the Gentoo installation.
319 </li> 119 </li>
320 <li> 120 <li>
321 The Gentoo <e>Universal</e> Installation CD, a bootable CD with the same 121 The Gentoo <e>Universal</e> Installation CD, a bootable CD with the same
322 abilities as the Minimal Installation CD. Additionally, it contains a 122 abilities as the Minimal Installation CD. Additionally, it contains
323 stage1 and several stage3 tarballs (optimized for the individual 123 several stage3 tarballs (optimized for the individual subarchitectures).
324 subarchitectures).
325 </li> 124 </li>
326</ul> 125</ul>
327 126
328<p> 127<p>
329To help you decide which Installation CD you need, we have written down the 128To help you decide which Installation CD you need, we have written down the
350<tr> 149<tr>
351 <th>+</th> 150 <th>+</th>
352 <ti>Smallest download</ti> 151 <ti>Smallest download</ti>
353</tr> 152</tr>
354<tr> 153<tr>
355 <th>+</th>
356 <ti>
357 You can do a stage1, stage2 or stage3 by getting the stage tarball off the
358 net
359 </ti>
360</tr>
361<tr>
362 <th>-</th> 154 <th>-</th>
363 <ti> 155 <ti>
364 Contains no stages, no Portage snapshot, no prebuilt packages and is 156 Contains no stage3 tarball, no Portage snapshot, no prebuilt packages and is
365 therefore not suitable for networkless installation 157 therefore not suitable for networkless installation
366 </ti> 158 </ti>
367</tr> 159</tr>
368</table> 160</table>
369 161
414Gentoo installation. 206Gentoo installation.
415</p> 207</p>
416 208
417<p> 209<p>
418If you intend to use the Packages CD to quickly install additional software, 210If you intend to use the Packages CD to quickly install additional software,
419make sure that you use the same subarchitecture as the stage-3 tarball you use. 211make sure that you use the same subarchitecture as the stage3 tarball you use.
212</p>
213
214</body>
215</subsection>
216<subsection>
217<title>The Stage3 Tarball</title>
218<body>
219
220<p>
221A stage3 tarball is an archive containing a minimal Gentoo environment, suitable
222to continue the Gentoo installation using the instructions in this manual.
223Previously, the Gentoo Handbook described the installation using one of three
224stage tarballs. While Gentoo still offers stage1 and stage2 tarballs, the
225official installation method uses the stage3 tarball. If you are interested in
226performing a Gentoo installation using a stage1 or stage2 tarball, please read
227the Gentoo FAQ on <uri link="/doc/en/faq.xml#stage12">How do I Install Gentoo
228Using a Stage1 or Stage2 Tarball?</uri>
420</p> 229</p>
421 230
422</body> 231</body>
423</subsection> 232</subsection>
424</section> 233</section>

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