Debian GNU/Linux lenny -- Installation Guide

Installation instructions, along with downloadable files, are available for each of the supported architectures:

If you have set your browser's localization properly, you can use the above link to get the right HTML version automatically — see content negotiation. Otherwise, pick the exact architecture, language, and format you want from the table below.

Architecture Format Languages
Alpha PDF Catalan Czech English Finnish French German Italian Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish
  HTML Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
  plain text Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
64-bit PC (amd64) PDF Catalan Czech English Finnish French German Italian Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish
  HTML Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
  plain text Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
ARM PDF Catalan Czech English Finnish French German Italian Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish
  HTML Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
  plain text Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
HP PA-RISC PDF Catalan Czech English Finnish French German Italian Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish
  HTML Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
  plain text Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
32-bit PC (i386) PDF Catalan Czech English Finnish French German Italian Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish
  HTML Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
  plain text Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
Intel Itanium IA-64 PDF Catalan Czech English Finnish French German Italian Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish
  HTML Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
  plain text Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
MIPS (big endian) PDF Catalan Czech English Finnish French German Italian Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish
  HTML Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
  plain text Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
MIPS (little endian) PDF Catalan Czech English Finnish French German Italian Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish
  HTML Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
  plain text Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
PowerPC PDF Catalan Czech English Finnish French German Italian Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish
  HTML Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
  plain text Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
IBM S/390 PDF Catalan Czech English Finnish French German Italian Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish
  HTML Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
  plain text Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
SPARC PDF Catalan Czech English Finnish French German Italian Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish
  HTML Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese
  plain text Catalan Chinese (China) Czech English Finnish French German Greek Italian Japanese Korean Portuguese Portuguese (Brazilian) Russian Spanish Swedish Vietnamese