dbootstrap is the name of the program that is run after you have
booted into the installation system. It is responsible for initial
system configuration and the installation of the “base system.”
The main job of dbootstrap and the main purpose of your initial
system configuration is to configure certain core elements of your
system. For instance, this includes your IP address, host name, and
other aspects of your networking setup, if any. This also includes
the configuration of “kernel modules,” which are drivers that are
loaded into the kernel. These modules include storage hardware
drivers, network drivers, special language support, and support for
other peripherals. Configuring these fundamental things is done
first, because it is often necessary for the system to function
properly for the next steps of installation.
dbootstrap is a simple, character-based application. It is very easy
to use; generally, it will guide you through each step of the
installation process in a linear fashion. You can also go back and
repeat steps if you made a mistake. Navigation within dbootstrap is
accomplished with the arrow keys, Enter, and Tab.