Chapter 1. Introduction

Table of Contents

1.1. Reporting bugs on this document
1.2. Contributing upgrade reports
1.3. Sources for this document

This document informs users of the Debian GNU/Linux distribution about major changes in version 5.0 (codenamed "lenny").

The release notes provide information on how to upgrade safely from release 4.0 (codenamed etch) to the current release and inform users of known potential issues they could encounter in that process.

You can get the most recent version of this document from If in doubt, check the date on the first page to make sure you are reading a current version.


Note that it is impossible to list every known issue and that therefore a selection has been made based on a combination of the expected prevalence and impact of issues.

Please note that we only support and document upgrading from the previous release of Debian (in this case, the upgrade from 4.0). If you need to upgrade from older releases, we suggest you read previous editions of the release notes and upgrade to 4.0 first.

1.1. Reporting bugs on this document

We have attempted to test all the different upgrade steps described in this document and to anticipate all the possible issues our users might encounter.

Nevertheless, if you think you have found a bug (incorrect information or information that is missing) in this documentation, please file a bug in the bug tracking system against the release-notes package.

1.2. Contributing upgrade reports

We welcome any information from users related to upgrades from etch to lenny. If you are willing to share information please file a bug in the bug tracking system against the upgrade-reports package with your results. We request that you compress any attachments that are included (using gzip).

Please include the following information when submitting your upgrade report:

  • The status of your package database before and after the upgrade: dpkg's status database available at /var/lib/dpkg/status and aptitude's package state information, available at /var/lib/aptitude/pkgstates. You should have made a backup before the upgrade as described at Section 4.1.1, “Back up any data or configuration information”, but you can also find backups of this information in /var/backups.

  • Session logs created using script, as described in Section 4.5.1, “Recording the session”.

  • Your apt logs, available at /var/log/apt/term.log or your aptitude logs, available at /var/log/aptitude.


You should take some time to review and remove any sensitive and/or confidential information from the logs before including them in a bug report as the information will be published in a public database.

1.3. Sources for this document

The source of this document is in DocBook XML format. The HTML version is generated using docbook-xsl and xsltproc. The PDF version is generated using dblatex or xmlroff. Sources for the Release Notes are available in the SVN repository of the Debian Documentation Project. You can use the web interface to access its files individually through the web and see their changes. For more information on how to access the SVN please consult the Debian Documentation Project SVN information pages.