source: BOOK/boot/common/devices.xml@ 9f696e8b

clfs-3.0.0-systemd systemd
Last change on this file since 9f696e8b was 6243b1f, checked in by Chris Staub <chris@…>, 12 years ago

Text updates

  • Property mode set to 100644
File size: 1.9 KB
Line 
1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-boot-devices">
9 <?dbhtml filename="devices.html"?>
10
11 <title>Populating /dev</title>
12
13 <indexterm zone="ch-boot-devices">
14 <primary sortas="e-/dev/*">/dev/*</primary>
15 </indexterm>
16
17 <sect2>
18 <title>Creating Initial Device Nodes</title>
19
20 <note os="a">
21 <para>The commands in the remainder of the book should be run as
22 the <systemitem class="username">root</systemitem> user. Check
23 that ${CLFS} is set in the
24 <systemitem class="username">root</systemitem> user&rsquo;s environment
25 before proceeding.</para>
26 </note>
27
28 <para os="b">When the kernel boots the system, it requires the presence
29 of a few device nodes, in particular the <filename
30 class="devicefile">console</filename> and <filename
31 class="devicefile">null</filename> devices. The device nodes will
32 be created on the hard disk so that they are available before
33 <command>udev</command> has been started, and additionally when Linux
34 is started in single user mode (hence the restrictive permissions on
35 <filename class="devicefile">console</filename>). Create these by running
36 the following commands:</para>
37
38<screen><userinput>mknod -m 600 ${CLFS}/dev/console c 5 1
39mknod -m 666 ${CLFS}/dev/null c 1 3</userinput></screen>
40
41 <para>Before udev starts, a tmpfs filesystem is mounted over
42 <filename class="directory">/dev</filename> and the previous entries are
43 no longer available. The following command creates files that are copied
44 over by the udev bootscript:</para>
45
46<screen><userinput>mknod -m 600 ${CLFS}/lib/udev/devices/console c 5 1
47mknod -m 666 ${CLFS}/lib/udev/devices/null c 1 3</userinput></screen>
48
49 </sect2>
50
51</sect1>
Note: See TracBrowser for help on using the repository browser.