1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
<!-- retain these comments for translator revision tracking -->
<!-- original version: 20466 untranslated -->
<sect1 id="boot-troubleshooting">
<title>Troubleshooting the Install Process</title>
<para>
</para>
<sect2 id="unreliable-floppies">
<title>Floppy Disk Reliability</title>
<para>
The biggest problem for people installing Debian for the first time
seems to be floppy disk reliability.
</para><para>
The boot floppy is the floppy with the worst problems, because it
is read by the hardware directly, before Linux boots. Often, the
hardware doesn't read as reliably as the Linux floppy disk driver, and
may just stop without printing an error message if it reads incorrect
data. There can also be failures in the Driver Floppies most of which
indicate themselves with a flood of messages about disk I/O errors.
</para><para>
If you are having the installation stall at a particular floppy, the
first thing you should do is re-download the floppy disk image and
write it to a <emphasis>different</emphasis> floppy. Simply
reformatting the old
floppy may not be sufficient, even if it appears that the floppy was
reformatted and written with no errors. It is sometimes useful to try
writing the floppy on a different system.
</para><para>
One user reports he had to write the images to floppy
<emphasis>three</emphasis> times before one worked, and then
everything was fine with the third floppy.
</para><para>
Other users have reported that simply rebooting a few times with the
same floppy in the floppy drive can lead to a successful boot. This is
all due to buggy hardware or firmware floppy drivers.
</para>
</sect2>
<sect2><title>Boot Configuration</title>
<para>
If you have problems and the kernel hangs during the boot process,
doesn't recognize peripherals you actually have, or drives are not
recognized properly, the first thing to check is the boot parameters,
as discussed in <xref linkend="boot-parms"/>.
</para><para>
If you are booting with your own kernel instead of the one supplied
with the installer, be sure that <userinput>CONFIG_DEVFS</userinput> is set in
your kernel. The installer requires
<userinput>CONFIG_DEVFS</userinput>.
</para><para>
Often, problems can be solved by removing add-ons and peripherals, and
then trying booting again. <phrase arch="i386">Internal modems, sound
cards, and Plug-n-Play devices can be especially problematic.</phrase>
</para><para>
If you have a large amount of memory installed in your machine, more
than 512M, and the installer hangs when booting the kernel, you may
need to include a boot argument to limit the amount of memory the
kernel sees, such as <userinput>mem=512m</userinput>.
</para>
</sect2>
<sect2 id="kernel-msgs">
<title>Interpreting the Kernel Startup Messages</title>
<para>
During the boot sequence, you may see many messages in the form
<computeroutput>can't find <replaceable>something</replaceable>
</computeroutput>, or <computeroutput>
<replaceable>something</replaceable> not present</computeroutput>,
<computeroutput>can't initialize <replaceable>something</replaceable>
</computeroutput>, or even <computeroutput>this driver release depends
on <replaceable>something</replaceable> </computeroutput>.
Most of these messages are harmless. You
see them because the kernel for the installation system is built to
run on computers with many different peripheral devices. Obviously, no
one computer will have every possible peripheral device, so the
operating system may emit a few complaints while it looks for
peripherals you don't own. You may also see the system pause for a
while. This happens when it is waiting for a device to respond, and
that device is not present on your system. If you find the time it
takes to boot the system unacceptably long, you can create a
custom kernel later (see <xref linkend="kernel-baking"/>).
</para>
</sect2>
<sect2 id="problem-report">
<title>Bug Reporter</title>
<para>
If you get through the initial boot phase but cannot complete the
install, the bug reporter menu choice may be helpful. It copies system
error logs and configuration information to a user-supplied floppy.
This information may provide clues as to what went wrong and how to
fix it. If you are submitting a bug report you may want to attach
this information to the bug report.
</para><para>
Other pertinent installation messages may be found in
<filename>/var/log/</filename> during the
installation, and <filename>/var/log/debian-installer/</filename>
after the computer has been booted into the installed system.
</para>
</sect2>
<sect2 id="submit-bug">
<title>Submitting Installation Reports</title>
<para>
If you still have problems, please submit an installation report. We also
encourage installation reports to be sent even if the installation is
successful, so that we can get as much information as possible on the largest
number of hardware configurations. Please use this template when filling out
installation reports, and file the report as a bug report against the
"installation-reports" pseudo package, by sending it to
<email>submit@bugs.debian.org</email>.
<informalexample><screen>
Package: installation-reports
Debian-installer-version: <Fill in date and from where you got the image>
uname -a: <The result of running uname -a on a shell prompt>
Date: <Date and time of the install>
Method: <How did you install? What did you boot off? If network
install, from where? Proxied?>
Machine: <Description of machine (eg, IBM Thinkpad R32)>
Processor:
Memory:
Root Device: <IDE? SCSI? Name of device?>
Root Size/partition table: <Feel free to paste the full partition
table, with notes on which partitions are mounted where.>
Output of lspci and lspci -n:
Base System Installation Checklist:
[O] = OK, [E] = Error (please elaborate below), [ ] = didn't try it
Initial boot worked: [ ]
Configure network HW: [ ]
Config network: [ ]
Detect CD: [ ]
Load installer modules: [ ]
Detect hard drives: [ ]
Partition hard drives: [ ]
Create file systems: [ ]
Mount partitions: [ ]
Install base system: [ ]
Install boot loader: [ ]
Reboot: [ ]
Comments/Problems:
<Description of the install, in prose, and any thoughts, comments
and ideas you had during the initial install.>
</screen></informalexample>
</para><para>
In the bug report, describe what the problem is, including the last
visible kernel messages in the event of a kernel hang. Describe the
steps that you did which brought the system into the problem state.
</para>
</sect2>
</sect1>
|
