|Linux Filesystem Hierarchy:
||Chapter 1. Linux
This directory contains everything required for the boot process
except for configuration files not needed at boot time (the most
notable of those being those that belong to the GRUB boot-loader)
and the map installer. Thus, the /boot directory stores data that
is used before the kernel begins executing user-mode programs. This
may include redundant (back-up) master boot records, sector/system
map files, the kernel and other important boot files and data that
is not directly edited by hand. Programs necessary to arrange for
the boot loader to be able to boot a file are placed in /sbin.
Configuration files for boot loaders are placed in /etc. The system
kernel is located in either / or /boot (or as under Debian in /boot
but is actually a symbolically linked at / in accordance with the
Backup master boot record.
This is installed as the basic boot sector. In the case of most
modern distributions it is actually a symbolic link to one of four
files /boot/boot-bmp.b, /boot/boot-menu.b, /boot/boot-text.b,
/boot/boot-compat.b which allow a user to change the boot-up schema
so that it utilises a splash screen, a simple menu, a text based
interface or a minimal boot loader to ensure compatibility
respectively. In each case re-installation of lilo is necessary in
order to complete the changes. To change the actual 'boot-logo' you
can either use utilities such as fblogo or the more refined
Used to boot non-Linux operating systems.
Installed kernel configuration. This file is most useful when
compiling kernels on other systems or device modules. Below is a
small sample of what the contents of the file looks like.
As you can see, it's rather simplistic. The line begins with the
configuration option and whether it's configured as part of the
kernel, as a module or not at all. Lines beginning with a # symbol
are comments and are not interpreted during processing.
Used to boot to the 0S/2 operating system.
Contains the location of the kernel.
- /boot/vmlinuz, /boot/vmlinuz-kernel-version
Normally the kernel or symbolic link to the kernel.
This subdirectory contains the GRUB configuration files
including boot-up images and sounds. GRUB is the GNU GRand Unified
Bootloader, a project which intends to solve all bootup problems
once and for all. One of the most interesting features, is that you
don't have to install a new partition or kernel, you can change all
parameters at boot time via the GRUB Console, since it knows about
Maps devices in /dev to those used by grub. For example,
(/dev/fd0) is represented by /dev/fd0 and (hd0, 4) is referenced by
- /boot/grub/grub.conf, /boot/grub/menu.lst
Grub configuration file.
Grub boot-up welcome message.
Grub boot-up background image.