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<sect1 id="ch-tools-introduction-chroot">
  <?dbhtml filename="introduction.html"?>

  <title>Introduction</title>

  <warning>
    <para>Please make sure the temporary system is already booted on the
    target machine.  All commands in this chapter and the following chapters
    should be executed on the target machine instead of the host distro,
    unless the book explicitly says a command is for the host.  Running a
    command for the temporary system on the host can completely destroy the
    host distro.</para>
  </warning>

  <para>This chapter shows how to build the last missing bits of the temporary
  system: the tools needed to build the various packages.  Now
  that all circular dependencies have been resolved and the temporary system
  is already bootable, we can boot it on the target machine and it would be
  completely isolated from the host operating system.  Then we can continue
  to build on the target machine.</para>

  <para>For proper operation of the temporary system, some communication
  with the running kernel must be established. This is done through the
  so-called <emphasis>Virtual Kernel File Systems</emphasis>, which will be
  mounted as soon as possible after boot. You may want to check
  that they are mounted by issuing <command>mount</command>.</para>

  <para>All commands in this and following chapters are run as &root; on the
  target system, fortunately without access to the host system.
  Be careful anyway, as if the storage devices of your target system already
  contain some important data, it's possible to destroy them with bad
  commands.</para>

</sect1>