From 717445113fa5ddb00bd38a9e40e4c3989424cf70 Mon Sep 17 00:00:00 2001 From: Frans Pop Date: Sun, 29 Oct 2006 00:16:11 +0000 Subject: Update of original English docs --- nl/boot-installer/parameters.xml | 9 +- nl/boot-installer/trouble.xml | 214 ++++++++++++++++++++++++++++++++++++--- 2 files changed, 205 insertions(+), 18 deletions(-) (limited to 'nl/boot-installer') diff --git a/nl/boot-installer/parameters.xml b/nl/boot-installer/parameters.xml index 215b59d9b..b83ddca2c 100644 --- a/nl/boot-installer/parameters.xml +++ b/nl/boot-installer/parameters.xml @@ -1,5 +1,5 @@ - + Boot Parameters @@ -74,11 +74,8 @@ The installation system recognizes a few additional boot parameters -Note that the 2.4 kernel accepts a maximum of 8 command line options and -8 environment options (including any options added by default for the -installer). If these numbers are exceeded, 2.4 kernels will drop any -excess options. With kernel 2.6.9 or newer, -you can use 32 command line options and 32 environment options. +With current kernels (2.6.9 or newer) you can use 32 command line options and +32 environment options. If these numbers are exceeded, the kernel will panic. diff --git a/nl/boot-installer/trouble.xml b/nl/boot-installer/trouble.xml index 445a530c6..26e3dba09 100644 --- a/nl/boot-installer/trouble.xml +++ b/nl/boot-installer/trouble.xml @@ -1,11 +1,195 @@ - + Troubleshooting the Installation Process + + CD-ROM Reliability + + +Sometimes, especially with older CD-ROM drives, the installer may fail +to boot from a CD-ROM. The installer may also — even after booting +successfully from CD-ROM — fail to recognize the CD-ROM or return +errors while reading from it during the installation. + + + +There are a many different possible causes for these problems. We can +only list some common issues and provide general suggestions on how to +deal with them. The rest is up to you. + + + +If you cannot get the installation working from CD-ROM, try one of the +other installation methods that are available. + + + + + Common issues + + + + +Some older CD-ROM drives do not support reading from discs that were burned +at high speeds using a modern CD writer. + + + + +If your system boots correctly from the CD-ROM, it does not necessarily +mean that Linux also supports the CD-ROM (or, more correctly, the controller +that your CD-ROM drive is connected to). + + + + +Some older CD-ROM drives do not work correctly if direct memory +access (DMA) is enabled. + + + + + + + + How to investigate and maybe solve issues + + +If the CD-ROM fails to boot, try the suggestions listed below. + + + + +Check that your BIOS actually supports booting from CD-ROM (older systems +possibly don't) and that your CD-ROM drive supports the media you are using. + + + + +If you downloaded an iso image, check that the md5sum of that image matches +the one listed for the image in the MD5SUMS file that +should be present in the same location as where you downloaded the image +from. + + +$ md5sum debian-testing-i386-netinst.iso +a20391b12f7ff22ef705cee4059c6b92 debian-testing-i386-netinst.iso + + +Next, check that the md5sum of the burned CD-ROM matches as well. The +following command should work. It uses the size of the image to read the +correct number of bytes from the CD-ROM. + + +$ dd if=/dev/cdrom | \ +> head -c `stat --format=%s debian-testing-i386-netinst.iso` | \ +> md5sum +a20391b12f7ff22ef705cee4059c6b92 - +262668+0 records in +262668+0 records out +134486016 bytes (134 MB) copied, 97.474 seconds, 1.4 MB/s + + + + + + + +If, after the installer has been booted successfully, the CD-ROM is not +detected, sometimes simply trying again may solve the problem. If you have +more than one CD-ROM drive, try changing the CD-ROM to the other drive. +If that does not work or if the CD-ROM is recognized but there are errors +when reading from it, try the suggestions listed below. Some basic knowledge +of Linux is required for this. +To execute any of the commands, you should first switch to the second +virtual console (VT2) and activate the shell there. + + + + +Switch to VT4 or view the contents of /var/log/syslog +(use nano as editor) to check for any specific error +messages. After that, also check the output of dmesg. + + + + +Check in the output of dmesg if your CD-ROM drive was +recognized. You should see something like (the lines do not necessarily +have to be consecutive): + + +Probing IDE interface ide1... +hdc: TOSHIBA DVD-ROM SD-R6112, ATAPI CD/DVD-ROM drive +ide1 at 0x170-0x177,0x376 on irq 15 +hdc: ATAPI 24X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, UDMA(33) +Uniform CD-ROM driver Revision: 3.20 + + +If you don't see something like that, chances are the controller your CD-ROM +is connected to was not recognized or may be not supported at all. If you +know what driver is needed for the drive, you can try loading it manually +using modprobe. + + + + +Check that there is a device node for your CD-ROM drive under +/dev/. In the example above, this would be +/dev/hdc. +There should also be a /dev/cdroms/cdrom0. + + + + +Use the mount command to check if the CD-ROM is already +mounted; if not, try mounting it manually: + + +$ mount /dev/hdc /cdrom + + +Check if there are any error messages after that command. + + + + +Check if DMA is currently enabled: + + +$ cd /proc/ide/hdc +$ grep dma settings +using_dma 1 0 1 rw + + +A 1 means it is enabled. If it is, try disabling it: + + +$ echo -n "using_dma:0" >settings + + +Make sure that you are in the directory for the device that corresponds +to your CD-ROM drive. + + + + +If there are any problems during the installation, try checking the integrity +of the CD-ROM using the option near the bottom of the installer's main menu. +This option can also be used as a general test if the CD-ROM can be read +reliably. + + + + + + + + Floppy Disk Reliability @@ -26,15 +210,20 @@ indicate themselves with a flood of messages about disk I/O errors. 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 different floppy. Simply -reformatting the old +first thing you should write it to a different +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. +Normally you should not have download a floppy image again, but if you +are experiencing problems it is always useful to verify that the images +were downloaded correctly by verifying their md5sums. + + + One user reports he had to write the images to floppy three times before one worked, and then everything was fine with the third floppy. @@ -242,7 +431,7 @@ installation reports, and file the report as a bug report against the Package: installation-reports Boot method: <How did you boot the installer? CD? floppy? network?> -Image version: <Fill in date and from where you got the image> +Image version: <Full URL to image you downloaded is best> Date: <Date and time of the install> Machine: <Description of machine (eg, IBM Thinkpad R32)> @@ -250,23 +439,24 @@ Processor: Memory: Partitions: <df -Tl will do; the raw partition table is preferred> -Output of lspci and lspci -n: +Output of lspci -nn and lspci -vnn: Base System Installation Checklist: [O] = OK, [E] = Error (please elaborate below), [ ] = didn't try it -Initial boot worked: [ ] -Configure network HW: [ ] -Config network: [ ] +Initial boot: [ ] +Detect network card: [ ] +Configure network: [ ] Detect CD: [ ] Load installer modules: [ ] Detect hard drives: [ ] Partition hard drives: [ ] -Create file systems: [ ] -Mount partitions: [ ] Install base system: [ ] +Clock/timezone setup: [ ] +User/password setup: [ ] +Install tasks: [ ] Install boot loader: [ ] -Reboot: [ ] +Overall install: [ ] Comments/Problems: -- cgit v1.2.3