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Hacking the debian-installer ISO image

Abstract

This document intends to provide a simple guide for hacking the debian-installer ISO image without learning how the official debian-installer ISO images are made. This should provide you with skills on making small modification or debugging on the debian-installer.

Copyright Notice

Copyright © 2004 by Osamu Aoki osamu@debian.org

GPL 2.0

Contents

• 1 Before hacking debian-installer
  • 1.1 Prerequisite
  • 1.2 The debian-installer booting stages
  • 1.3 Basics of the bootloader
  • 1.4 What is the initrd?
  • 1.5 How to hack the disk image file
    • 1.5.1 Formating the floppy disk image
    • 1.5.2 Formating the hard disk disk image
    • 1.5.3 Mounting the hard disk image
    • 1.5.4 Checking the size of the hard disk image
    • 1.5.5 Resizing the hard disk image
• 2 Hacking the debian-installer step-by-step
  • 2.1 Obtaining a debian-installer ISO image file
    • 2.1.1 Downloading a debian-installer ISO image
    • 2.1.2 Mounting the debian-installer ISO image
    • 2.1.3 Making the working copy of the debian-installer
  • 2.2 Obtaining the latest source
    • 2.2.1 The subversion repository
    • 2.2.2 The unstable repository
  • 2.3 Hacking the debian-installer internals
    • 2.3.1 Simple hacking of debian-installer
    • 2.3.2 Hacking the debian-installer at Stage 1
      • 2.3.2.1 Making the working copy of the initrd
      • 2.3.2.2 Hacking the initrd disk image
      • 2.3.2.3 Making a new initrd disk image
    • 2.3.3 Hacking debian-installer at Stage 2 and Stage 3
      • 2.3.3.1 Building a hacked package from the source
      • 2.3.3.2 Placing a hacked package into poolmodified
    • 2.3.4 Hacking the debian-installer through hooks
    • 2.3.5 The custom kernel for the debian-installer
    • 2.3.6 Configuring the ISOLINUX bootloader
    • 2.3.7 Updating MD5SUM values
  • 2.4 Creating a new debian-installer CD
• 3 Tips for hacking debian-installer
  • 3.1 Connecting an external host from the debian-installer.
• A Appendix

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Hacking the debian-installer ISO image