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Revision 1.21 - (hide annotations) (download) (as text)
Tue Aug 24 00:00:35 2004 UTC (10 years, 2 months ago) by pylon
Branch: MAIN
Changes since 1.20: +15 -2 lines
File MIME type: application/xml
Changes that has been known since the (inofficial) 2004.2 ppc-LiveCD has been released.

Mostly it's kernel-2.4 stuff that has been deleted.  And some updates about the Pegasos support.

1 swift 1.1 <?xml version='1.0' encoding='UTF-8'?>
2     <!DOCTYPE sections SYSTEM "/dtd/book.dtd">
3    
4     <!-- The content of this document is licensed under the CC-BY-SA license -->
5     <!-- See http://creativecommons.org/licenses/by-sa/1.0 -->
6    
7 pylon 1.21 <!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-ppc-medium.xml,v 1.20 2004/08/08 10:12:39 swift Exp $ -->
8 swift 1.1
9     <sections>
10     <section>
11     <title>Hardware Requirements</title>
12     <subsection>
13     <title>Introduction</title>
14     <body>
15    
16     <p>
17     Before we start, we first list what hardware requirements you need to
18     successfully install Gentoo on your box. This of course depends on your
19     architecture.
20     </p>
21    
22     </body>
23     </subsection>
24     <subsection>
25     <title>The PPC Architecture</title>
26     <body>
27    
28     <p>
29     Check the following requirements before you
30     continue with the Gentoo installation:
31     </p>
32    
33     <ul>
34     <li>
35 dertobi123 1.17 You need at least 2 GB of free disk space
36 swift 1.1 </li>
37     <li>
38 dertobi123 1.17 If you do not use prebuilt packages, you need at least 300 MB of memory (RAM +
39 swift 1.1 swap)
40     </li>
41     <li>
42 dertobi123 1.17 For the <e>PowerPC architecture</e>, you can install Gentoo/PPC on NewWorld machines
43 swift 1.1 having a Power or PowerPC microprocessor, including but not limited to G3, G4
44 dertobi123 1.17 or G5 powered Apple computers such as the iMac, the eMac, the iBook, the PowerBook,
45 pylon 1.21 Xserve, PowerMac, and bPlan's Pegasos II. We also provide limited
46 dertobi123 1.17 support for OldWorld systems, IBM (RS/6000, iSeries, pSeries, ...) and Amiga
47 swift 1.7 systems. Be sure to read up on the <uri link="/doc/en/gentoo-ppc-faq.xml">Gentoo
48 dertobi123 1.17 PPC FAQ</uri> before you begin.
49 swift 1.1 </li>
50     </ul>
51    
52     </body>
53     </subsection>
54     </section>
55     <section>
56     <title>Make your Choice</title>
57     <subsection>
58     <title>Introduction</title>
59     <body>
60    
61     <p>
62     Still interested in trying out Gentoo? Well, then it is now time to
63     choose the installation medium you want to use. Yes, you have the
64     choice, no, they are not all equal, and yes, the result is always the same: a
65     Gentoo base system.
66     </p>
67    
68     <p>
69     The installation media we will describe are:
70     </p>
71    
72     <ul>
73     <li>Gentoo's Minimal LiveCD</li>
74     <li>Gentoo's Universal LiveCD</li>
75     </ul>
76    
77     <p>
78     Every single media has its advantages and disadvantages. We will list
79     the pros and cons of every medium so you have all the information to
80     make a justified decision. But before we continue, let's explain our
81     three-stage installation.
82     </p>
83    
84     </body>
85     </subsection>
86     <subsection>
87     <title>The Three Stages</title>
88     <body>
89    
90     <p>
91     Gentoo Linux can be installed using one of three <e>stage</e> tarball files.
92     The one you choose depends on how much of the system you want to compile
93     yourself. The <e>stage1</e> tarball is used when you want to bootstrap and
94     build the entire system from scratch. The <e>stage2</e> tarball is used for
95     building the entire system from a bootstrapped &quot;semi-compiled&quot; state.
96     The <e>stage3</e> tarball already contains a basic Gentoo Linux system that has
97     been built for you. As we will explain later, you can also install
98     Gentoo without compiling anything (except your kernel and some optional
99     packages). If you want this, you have to use a <e>stage3</e> tarball.
100     </p>
101    
102     <p>
103     Now what stage do you have to choose?
104     </p>
105    
106     <p>
107     Starting from a <e>stage1</e> allows you to have total control over the
108     optimization settings and optional build-time functionality that is
109     initially enabled on your system. This makes <e>stage1</e> installs good for
110     power users who know what they are doing. It is also a great
111     installation method for those who would like to know more about the
112     inner workings of Gentoo Linux.
113     </p>
114    
115 swift 1.10 <p>
116     A <e>stage1</e> installation can only be performed when you have a working
117     Internet connection.
118     </p>
119    
120 swift 1.1 <table>
121     <tr>
122     <th>Stage1</th>
123     <th>Pros and Cons</th>
124     </tr>
125     <tr>
126     <th>+</th>
127     <ti>
128     Allows you to have total control over the optimization settings and optional
129     build-time functionality that is initially enabled on your system
130     </ti>
131     </tr>
132     <tr>
133     <th>+</th>
134     <ti>Suitable for powerusers that know what they are doing</ti>
135     </tr>
136     <tr>
137     <th>+</th>
138     <ti>Allows you to learn more about the inner workings of Gentoo</ti>
139     </tr>
140     <tr>
141     <th>-</th>
142     <ti>Takes a long time to finish the installation</ti>
143     </tr>
144     <tr>
145     <th>-</th>
146     <ti>
147     If you don't intend to tweak the settings, it is probably a waste of time
148     </ti>
149     </tr>
150 swift 1.10 <tr>
151     <th>-</th>
152     <ti>
153     Not suitable for networkless installations
154     </ti>
155     </tr>
156 swift 1.1 </table>
157    
158     <p>
159     <e>Stage2</e> installs allow you to skip the bootstrap process and doing this
160     is fine if you are happy with the optimization settings that we chose
161     for your particular <e>stage2</e> tarball.
162     </p>
163    
164 swift 1.10 <p>
165     A <e>stage2</e> installation can only be performed when you have a working
166     Internet connection.
167     </p>
168    
169 swift 1.1 <table>
170     <tr>
171     <th>Stage2</th>
172     <th>Pros and Cons</th>
173     </tr>
174     <tr>
175     <th>+</th>
176     <ti>You don't need to bootstrap</ti>
177     </tr>
178     <tr>
179     <th>+</th>
180     <ti>Faster than starting with stage1</ti>
181     </tr>
182     <tr>
183     <th>+</th>
184     <ti>You can still tweak your settings</ti>
185     </tr>
186     <tr>
187     <th>-</th>
188     <ti>You cannot tweak as much as with a stage1</ti>
189     </tr>
190     <tr>
191     <th>-</th>
192     <ti>It's not the fastest way to install Gentoo</ti>
193     </tr>
194     <tr>
195     <th>-</th>
196     <ti>You have to accept the optimizations we chose for the bootstrap</ti>
197     </tr>
198 swift 1.10 <tr>
199     <th>-</th>
200     <ti>
201     Not suitable for networkless installations
202     </ti>
203     </tr>
204 swift 1.1 </table>
205    
206     <p>
207     Choosing to go with a <e>stage3</e> allows for the fastest install of Gentoo
208     Linux, but also means that your base system will have the optimization
209     settings that we chose for you (which to be honest, are good settings
210     and were carefully chosen to enhance performance while maintaining
211     stability). <e>stage3</e> is also required if you want to install Gentoo using
212 swift 1.9 prebuilt packages or without a network connection.
213 swift 1.1 </p>
214    
215     <table>
216     <tr>
217     <th>Stage3</th>
218     <th>Pros and Cons</th>
219     </tr>
220     <tr>
221     <th>+</th>
222     <ti>Fastest way to get a Gentoo base system</ti>
223     </tr>
224     <tr>
225 swift 1.10 <th>+</th>
226     <ti>Suitable for networkless installations</ti>
227     </tr>
228     <tr>
229 swift 1.1 <th>-</th>
230     <ti>You cannot tweak the base system - it's built already</ti>
231     </tr>
232     <tr>
233     <th>-</th>
234     <ti>You cannot brag about having used stage1 or stage2</ti>
235     </tr>
236     </table>
237    
238     <p>
239     Write down (or remember) what stage you want to use. You need this later when
240     you decide what LiveCD (or other installation medium) you want to use. You might
241     be interested to know that, if you decide to use different optimization settings
242     after having installed Gentoo, you will be able to recompile your entire system
243     with the new optimization settings.
244     </p>
245    
246     <p>
247     Now take a look at the available installation media.
248     </p>
249    
250     </body>
251     </subsection>
252     <subsection>
253     <title>Gentoo LiveCDs</title>
254     <body>
255    
256 pylon 1.21 <note>
257     The Gentoo/PPC 2004.2 release is not official, so you will not find them on the
258     mirrors. Nevertheless we compiled LiveCDs and made them available at <uri
259     link="http://www.metadistribution.org/gentoo/2004.2/"/>, <uri
260     link="ftp://ftp2.stw-bonn.de/pub/mirror/gentoo/releases/ppc/2004.2/livecd/"/> and
261     via <uri link="http://torrents.gentoo.org/torrents/">BitTorrent</uri>.
262     </note>
263    
264     <note>
265     It is known that the Pegasos II will not boot the 2004.2 LiveCD. Please use the
266     2004.1 LiveCD.
267     </note>
268    
269 swift 1.1 <p>
270     The <e>Gentoo LiveCDs</e> are bootable CDs which contain a
271     self-sustained Gentoo environment. They allow you to boot Linux from the CD.
272     During the boot process your hardware is detected and the appropriate drivers
273     are loaded. They are maintained by Gentoo developers.
274     </p>
275    
276     <p>
277     All LiveCDs allow you to boot, setup networking, initialize your
278     partitions and start installing Gentoo from the Internet. However, some
279     LiveCDs also contain all necessary source code so you are able to install
280     Gentoo without a working network configuration.
281     </p>
282    
283     <p>
284     Now what do these LiveCDs contain?
285     </p>
286    
287     </body>
288     </subsection>
289     <subsection>
290     <title>Gentoo's Minimal LiveCD</title>
291     <body>
292    
293     <p>
294     This is a small, no-nonsense, bootable CD which sole purpose is to boot the
295     system, prepare the networking and continue with the Gentoo installation. It
296     does not contain any stages (or, in some cases, a single stage1 file),
297     source code or precompiled packages. For example the ppc variant of this
298 dertobi123 1.17 LiveCD can be found in the <path>livecd</path> subdirectory and is called
299     <c>install-ppc-minimal-2004.2.iso</c>.
300 swift 1.1 </p>
301    
302     <table>
303     <tr>
304     <th>Minimal LiveCD</th>
305     <th>Pros and Cons</th>
306     </tr>
307     <tr>
308     <th>+</th>
309     <ti>Smallest download</ti>
310     </tr>
311     <tr>
312     <th>+</th>
313     <ti>Suitable for a complete architecture</ti>
314     </tr>
315     <tr>
316     <th>+</th>
317     <ti>
318     You can do a stage1, stage2 or stage3 by getting the stage tarball off the
319     net
320     </ti>
321     </tr>
322     <tr>
323     <th>-</th>
324     <ti>
325     Contains no stages, no portage snapshot, no GRP packages and therefore not
326     suitable for networkless installation
327     </ti>
328     </tr>
329     </table>
330    
331     </body>
332     </subsection>
333     <subsection>
334     <title>Gentoo's Universal LiveCD</title>
335     <body>
336    
337     <p>
338     Gentoo's Universal LiveCD is a bootable CD suitable to install Gentoo without
339     networking. It contains a stage1 and several stage3 tarballs (optimized for the
340     individual subarchitectures). For example the ppc variant of this CD is called
341 dertobi123 1.17 <c>install-ppc-universal-2004.2.iso</c> and can be found in the
342     <path>livecd</path> subdirectory.
343 swift 1.1 </p>
344    
345     <p>
346 swift 1.7 If you take a closer look on our mirrors, you will see
347     that we provide <e>Gentoo Package CDs</e>. This CD (which isn't
348 swift 1.1 bootable) only contains precompiled packages and can be used to install software
349     after a succesfull Gentoo Installation. To install Gentoo, you only
350     need the Universal LiveCD, but if you want OpenOffice.org, Mozilla, KDE, GNOME
351     etc. without having to compile every single one of them, you need the Packages
352     CD too. For example the G4 (a subarchitecture of ppc) Packages CD is
353 dertobi123 1.17 called <c>packages-g4-2004.2.iso</c> and can be found in the appropriate
354 swift 1.1 subdirectory (<path>g4/</path>).
355     </p>
356    
357 swift 1.11 <p>
358     You only need the Packages CD if you want to perform a stage3 with GRP
359     installation.
360     </p>
361    
362 swift 1.1 <table>
363     <tr>
364     <th>Universal LiveCD with Packages CD</th>
365     <th>Pros and Cons</th>
366     </tr>
367     <tr>
368     <th>+</th>
369     <ti>Packages CD is optimized to your architecture and subarchitecture</ti>
370     </tr>
371     <tr>
372     <th>+</th>
373     <ti>
374     Packages CD provides precompiled packages for fast Gentoo installations
375     </ti>
376     </tr>
377     <tr>
378     <th>+</th>
379     <ti>
380     Contains everything you need. You can even install without a network
381     connection.
382     </ti>
383     </tr>
384     <tr>
385     <th>-</th>
386     <ti>Huge download</ti>
387     </tr>
388     </table>
389    
390     </body>
391     </subsection>
392     </section>
393     <section>
394     <title>Download, Burn and Boot a Gentoo LiveCD</title>
395     <subsection>
396     <title>Downloading and Burning the LiveCDs</title>
397     <body>
398    
399     <p>
400     You have chosen to use a Gentoo LiveCD (if not, then you are reading the
401     wrong section). We'll first start by downloading and burning the chosen
402     LiveCD. We previously discussed the several available LiveCDs, but where can you
403     find them?
404     </p>
405    
406     <p>
407     Visit one of our <uri
408     link="/main/en/mirrors.xml">mirrors</uri> and go to
409 dertobi123 1.17 <path>releases/ppc/2004.2/livecd</path>, which is
410 swift 1.1 the path where the LiveCD(s) of your choice are located. Inside that
411     directory you'll find so-called ISO-files. Those are full CD images
412     which you can write on a CD-R.
413     </p>
414    
415     <p>
416     In case you wonder if your downloaded file is corrupted or not, you can
417     check its MD5 checksum and compare it with the MD5 checksum we provide (such as
418 dertobi123 1.17 <path>install-ppc-minimal-2004.2.iso.md5</path>). You can check the MD5 checksum
419 swift 1.1 with the <c>md5sum</c> tool under Linux/Unix or <uri
420 neysx 1.16 link="http://www.etree.org/md5com.html">md5sum</uri> for Windows.
421 swift 1.1 </p>
422    
423     <p>
424 dertobi123 1.17 As long as Mac OS X does not support <c>md5sum</c> you have to use the md5
425     capability of <c>openssl</c>. Therefore type in Terminal.app:
426 swift 1.12 </p>
427    
428 dertobi123 1.18 <pre caption="md5sum with the help of openssl">
429 dertobi123 1.17 $ <i>openssl md5 /path/to/iso</i>
430     <comment>This could take some time depending of the size of the ISO and your CPU</comment>
431 swift 1.12 </pre>
432    
433     <p>
434 dertobi123 1.17 Now compare this output with the appropriate file found on the server where you
435     downloaded the ISO (the file will end with .md5). If it is the same, the ISO
436     image downloaded correctly. Be sure you have not mounted it (e.g. with Disk
437     Copy) yet!
438 swift 1.12 </p>
439    
440 dertobi123 1.17 <p>
441     More information are available in our <uri
442     link="/doc/en/gentoo-ppc-faq.xml">PPC FAQ.</uri>
443     </p>
444 swift 1.12
445     <p>
446 swift 1.1 To burn the downloaded ISO(s), you have to select raw-burning. How you
447 swift 1.14 do this is highly program-dependent. We will discuss <c>cdrecord</c> and
448 dertobi123 1.17 <c>k3b</c> here; more information can be found in our <uri
449     link="/doc/en/faq.xml#isoburning">Gentoo FAQ</uri> and the <uri
450     link="/doc/en/gentoo-ppc-faq.xml">PPC FAQ</uri>.
451 swift 1.1 </p>
452    
453     <ul>
454     <li>
455     With cdrecord, you simply type <c>cdrecord dev=/dev/hdc</c> (replace
456     <path>/dev/hdc</path> with your CD-RW drive's device path) followed
457     by the path to the ISO file :)
458     </li>
459     <li>
460 dertobi123 1.17 With k3b, select <c>Tools</c> &gt; <c>CD</c> &gt; <c>Burn Image</c>. Then
461 bennyc 1.6 you can locate your ISO file within the 'Image to Burn' area. Finally click
462 swift 1.3 <c>Start</c>.
463     </li>
464 swift 1.1 </ul>
465    
466     </body>
467     </subsection>
468 swift 1.7 </section>
469     <section>
470     <title>Booting the PPC LiveCD(s)</title>
471 swift 1.1 <subsection>
472 swift 1.7 <title>Default: Apple/IBM</title>
473 swift 1.1 <body>
474    
475     <p>
476 dertobi123 1.17 On NewWorld machines place the LiveCD in the CD-ROM and reboot the system. When
477     the system-start-bell sounds, simply hold down the 'C' until the CD loads.
478     </p>
479    
480     <p>
481     If you have an OldWorld Mac the bootable portion of the livecd can't be used.
482     Instead you need to download <uri
483     link="http://penguinppc.org/projects/bootx/">BootX</uri> and have a working
484     MacOS installed on your system. You need to copy the <c>BootX Extension</c> from
485     the unpacked archive-file into the <c>Extensions Folder</c> and make a new
486     directory called <c>Linux Kernels</c> in the System Folder. In the next step you
487     need to copy the <c>G3</c> kernel and the <c>initrd.img.gz</c> from the LiveCD
488     into the <c>Linux Kernels</c> directory. Then reboot the system and wait for
489     BootX to load. After BootX loaded you still have to set up a few items. In the
490 cam 1.19 options dialog you need to check <c>Use Specified RAM Disk</c> and select the
491 dertobi123 1.17 <c>initrd.img.gz</c> which you put in the <c>Linux Kernels</c> directory. The
492     ramdisk size should be set to at least <c>32000</c>. Furthermore the kernel
493     argument needs to be set to <c>rw init=/linuxrc cdroot</c>. Eventually you are
494     able to boot the LiveCD when you select Linux on Startup.
495     </p>
496    
497     <p>
498     After the LiveCD loaded, you will be greeted by a friendly welcome message and a
499     <e>boot:</e> prompt at the bottom of the screen.
500 swift 1.1 </p>
501    
502     <p>
503     At this prompt you are able to select a kernel for the subarchitecture you use.
504 dertobi123 1.17 We provide <c>G3</c>, <c>G4</c> and <c>G5</c>. All kernels are built with
505     support for multiple CPUs, but they will boot on single processor machines as
506     well.
507 swift 1.1 </p>
508    
509     <p>
510     You are also able to tweak some kernel options at this prompt. The following
511     table lists the available boot options you can add:
512     </p>
513    
514     <table>
515     <tr>
516     <th>Boot Option</th>
517     <th>Description</th>
518     </tr>
519     <tr>
520     <ti><c>video</c></ti>
521     <ti>
522     This option takes one of the following vendor-specific tags:
523     <c>radeonfb</c>, <c>rivafb</c>, <c>atyfb</c>, <c>aty128</c> or
524     <c>ofonly</c>. You can follow this tag with the resolution and refreshrate
525     you want to use. For instance <c>video=radeonfb:1280x1024@75</c>. If you are
526     uncertain what to choose, <c>ofonly</c> will most certainly work.
527     </ti>
528     </tr>
529     <tr>
530 pylon 1.2 <ti><c>nol3</c></ti>
531 swift 1.1 <ti>
532 dertobi123 1.17 Disables level 3 cache on some PowerBooks (needed for at least the 17&quot;)
533 swift 1.1 </ti>
534     </tr>
535     <tr>
536     <ti><c>debug</c></ti>
537     <ti>
538     Enables verbose booting, spawns an initrd shell that can be used to debug
539     the LiveCD
540     </ti>
541     </tr>
542 swift 1.7 <tr>
543     <ti><c>sleep=X</c></ti>
544     <ti>
545     Wait X seconds before continuing; this can be needed by some very old SCSI
546     CD-ROMs which don't speed up the CD quick enough
547     </ti>
548     </tr>
549     <tr>
550     <ti><c>bootfrom=X</c></ti>
551     <ti>
552     Boot from a different device
553     </ti>
554     </tr>
555 swift 1.1 </table>
556    
557     <p>
558     At this prompt, hit enter, and a complete Gentoo Linux environment will be
559 swift 1.7 loaded from the CD. Continue with <uri link="#booted">And When You're
560     Booted...</uri>.
561 swift 1.1 </p>
562    
563 swift 1.7 </body>
564     </subsection>
565     <subsection>
566     <title>Alternative: Pegasos</title>
567     <body>
568    
569 swift 1.1 <p>
570 swift 1.7 On the Pegasos simply insert the CD and at the SmartFirmware boot-prompt type
571 swift 1.8 <c>boot cd /boot/pegasos root=/dev/ram0 init=/linuxrc looptype=gcloop
572     cdroot</c>. If you need any special boot options you can append them to the
573     command-line. For instance <c>boot cd /boot/pegasos root=/dev/ram0
574     init=/linuxrc looptype=gcloop cdroot video=radeonfb:1280x1024@75 mem=256M</c>.
575 swift 1.1 </p>
576    
577 swift 1.7 </body>
578     </subsection>
579     <subsection id="booted">
580     <title>And When You're Booted...</title>
581     <body>
582 swift 1.1
583     <p>
584 swift 1.7 You will be greeted by a root ("#") prompt on the current console. You can also
585     switch to other consoles by pressing Alt-fn-F2, Alt-fn-F3 and Alt-fn-F4. Get
586     back to the one you started on by pressing Alt-fn-F1.
587 swift 1.1 </p>
588    
589     <p>
590     If you are installing Gentoo on a system with a non-US keyboard, use
591     <c>loadkeys</c> to load the keymap for your keyboard. To list the available
592 dertobi123 1.17 keymaps, execute <c>ls /usr/share/keymaps/i386</c>. Do not use the keymaps in
593     <path>ppc</path> or <path>mac</path> as they are for ADB-based OldWorld
594     machines.
595 swift 1.1 </p>
596    
597     <pre caption="Listing available keymaps">
598     <comment>(PPC uses x86 keymaps on most systems. The mac/ppc keymaps provided
599     on the LiveCD are ADB keymaps and unusable with the LiveCD kernel)</comment>
600     # <i>ls /usr/share/keymaps/i386</i>
601     </pre>
602    
603     <p>
604     Now load the keymap of your choice:
605     </p>
606    
607     <pre caption="Loading a keymap">
608 swift 1.7 # <i>loadkeys be-latin1</i>
609 swift 1.1 </pre>
610    
611     <p>
612     Now continue with <uri link="#hardware">Extra Hardware Configuration</uri>.
613     </p>
614    
615     </body>
616     </subsection>
617     <subsection id="hardware">
618     <title>Extra Hardware Configuration</title>
619     <body>
620    
621     <p>
622 dertobi123 1.17 When the LiveCD boots, it tries to detect all your hardware devices and
623 swift 1.1 loads the appropriate kernel modules to support your hardware. In the
624 dertobi123 1.17 vast majority of cases, it does a very good job. However, in some cases, it may
625     not auto-load the kernel modules you need. If the PCI auto-detection missed some
626     of your system's hardware, you will have to load the appropriate kernel modules
627     manually.
628 swift 1.1 </p>
629    
630     <p>
631     In the next example we try to load the <c>8139too</c> module (support for
632     certain kinds of network interfaces):
633     </p>
634    
635     <pre caption="Loading kernel modules">
636     # <i>modprobe 8139too</i>
637     </pre>
638    
639     </body>
640     </subsection>
641     <subsection>
642     <title>Optional: Tweaking Hard Disk Performance</title>
643     <body>
644    
645     <p>
646     If you are an advanced user, you might want to tweak the IDE hard disk
647     performance using <c>hdparm</c>. With the <c>-tT</c> options you can
648     test the performance of your disk (execute it several times to get a
649     more precise impression):
650     </p>
651    
652     <pre caption="Testing disk performance">
653     # <i>hdparm -tT /dev/hda</i>
654     </pre>
655    
656     <p>
657     To tweak, you can use any of the following examples (or experiment
658     yourself) which use <path>/dev/hda</path> as disk (substitute with your
659     disk):
660     </p>
661    
662     <pre caption="Tweaking hard disk performance">
663     <comment>Activate DMA:</comment> # <i>hdparm -d 1 /dev/hda</i>
664     <comment>Activate DMA + Safe Performance-enhancing Options:</comment> # <i>hdparm -d 1 -A 1 -m 16 -u 1 -a 64 /dev/hda</i>
665     </pre>
666    
667     </body>
668     </subsection>
669 swift 1.20 <subsection id="useraccounts">
670 swift 1.1 <title>Optional: User Accounts</title>
671     <body>
672    
673     <p>
674     If you plan on giving other people access to your installation
675     environment or you want to chat using <c>irssi</c> without root privileges (for
676     security reasons), you need to create the necessary user accounts and change
677     the root password.
678     </p>
679    
680     <p>
681     To change the root password, use the <c>passwd</c> utility:
682     </p>
683    
684     <pre caption="Changing the root password">
685     # <i>passwd</i>
686     New password: <comment>(Enter your new password)</comment>
687     Re-enter password: <comment>(Re-enter your password)</comment>
688     </pre>
689    
690     <p>
691 swift 1.5 To create a user account, we first enter their credentials, followed by
692 swift 1.1 its password. We use <c>useradd</c> and <c>passwd</c> for these tasks.
693     In the next example, we create a user called &quot;john&quot;.
694     </p>
695    
696     <pre caption="Creating a user account">
697     # <i>useradd john</i>
698     # <i>passwd john</i>
699     New password: <comment>(Enter john's password)</comment>
700     Re-enter password: <comment>(Re-enter john's password)</comment>
701     </pre>
702    
703     <p>
704     You can change your user id from root to the newly created user by using
705     <c>su</c>:
706     </p>
707    
708     <pre caption="Changing user id">
709     # <i>su john -</i>
710     </pre>
711    
712     </body>
713     </subsection>
714     <subsection>
715 swift 1.20 <title>Optional: Viewing Documentation while Installing</title>
716     <body>
717    
718     <p>
719     If you want to view the Gentoo Handbook (either from-CD or online) during the
720     installation, make sure you have created a user account (see <uri
721     link="#useraccouts">Optional: User Accounts</uri>). Then press <c>Alt-F2</c> to
722     go to a new terminal and log in.
723     </p>
724    
725     <p>
726     If you want to view the documentation on the CD you can immediately run
727     <c>links2</c> to read it:
728     </p>
729    
730     <pre caption="Viewing the on-CD documentation">
731     # <i>links2 /mnt/cdrom/docs/html/index.html</i>
732     </pre>
733    
734     <p>
735     However, it is preferred that you use the online Gentoo Handbook as it will be
736     more recent than the one provided on the CD. You can view it using <c>links2</c>
737     as well, but only after having completed the <e>Configuring your Network</e>
738     chapter (otherwise you won't be able to go on the Internet to view the
739     document):
740     </p>
741    
742     <pre caption="Viewing the Online Documentation">
743     # <i>links2 http://www.gentoo.org/doc/en/handbook/handbook-ppc.xml</i>
744     </pre>
745    
746     <p>
747     You can go back to your original terminal by pressing <c>Alt-F1</c>.
748     </p>
749    
750     </body>
751     </subsection>
752     <subsection>
753 swift 1.1 <title>Optional: Starting the SSH Daemon</title>
754     <body>
755    
756     <p>
757     If you want to allow other users to access your computer during the
758     Gentoo installation (perhaps because those users are going to help you
759     install Gentoo, or even do it for you), you need to create a user
760     account for them and perhaps even provide them with your root password
761     (<e>only</e> do that <e>if</e> you <b>fully trust</b> that user).
762     </p>
763    
764     <p>
765     To fire up the SSH daemon, execute the following command:
766     </p>
767    
768     <pre caption="Starting the SSH daemon">
769     # <i>/etc/init.d/sshd start</i>
770     </pre>
771    
772     <p>
773     To be able to use sshd, you first need to setup your networking. Continue with
774     the chapter on <uri link="?part=1&amp;chap=3">Configuring your Network</uri>.
775     </p>
776    
777     </body>
778     </subsection>
779     </section>
780     </sections>

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