clear the bss at the startup and fix some netboot bugs.

docs/appendices.texi

@@ -49,7 +49,9 @@ $ mke2fs /dev/fd0
 Mount it on somewhere, say, @file{/mnt}.
 
 @item
-Copy the GRUB images to @file{/mnt/boot/grub}.
+Copy the GRUB images to @file{/mnt/boot/grub}. Only @file{stage1},
+@file{stage2} and @file{menu.lst} are necessary. You may not copy
+@dfn{stage1.5}s.
 
 @item
 Run the following command:
@@ -115,7 +117,7 @@ Multiboot-compliant, the world would be an utopia@dots{}
 
 
 @node Obtaining and Building GRUB
-@appendix Obtaining and Building GRUB
+@appendix How to obtain and build GRUB
 
 @quotation
 @strong{Caution:} GRUB requires binutils-2.9.1.0.23 or later because the

docs/new-grub.texi

@@ -97,38 +97,39 @@ edition documents version @value{VERSION}.
 @menu
 Part I: The Tutorial Manual
 
-* Overview::
-* Device Syntax::
-* Installation::
-* Boot::
-* Configuration::
+* Overview::                    Starting to use GRUB
+* Device Syntax::               How to specify a device
+* Installation::                How to install GRUB on your drive
+* Boot::                        How to boot your operating systems
+* Configuration::               Writing your configuration file
 
 Part II: The User Reference Manual
 
-* Introduction::
-* Filesystem::
-* Interface::
-* Command::
-* Troubleshooting::
-* Invoking the grub shell::
-* Invoking mbchk::
+* Introduction::                Capturing the spirit of GRUB
+* Filesystem::                  Filesystem syntax and semantics
+* Interface::                   The menu and the command-line
+* Command::                     The list of available builtin commands
+* Troubleshooting::             Error messages produced by GRUB
+* Invoking the grub shell::     How to use the grub shell
+* Invoking mbchk::              How to use the Multiboot checker
 
 Part III: The Programmer Reference Manual
 
-* Memory map::
-* Embedded data::
-* Filesystem interface::
-* Bootstrap tricks::
-* Memory detection::
-* Low-level disk I/O::
-* MBR::
-* Partition table::
+* Hacking::                     Implementation details
+* Memory map::                  The memory map of various components
+* Embedded data::               Embedded variables in GRUB
+* Filesystem interface::        The generic interface for the fs code
+* Bootstrap tricks::            The bootstrap mechanism used in GRUB
+* Memory detection::            How to detect all installed @sc{ram}
+* Low-level disk I/O::          INT 13H disk I/O interrupts
+* MBR::                         The structure of Master Boot Record
+* Partition table::             The format of partition table
 
 Appendices and Indices
 
-* FAQ::
-* Obtaining and Building GRUB::
-* Reporting bugs::
+* FAQ::                         Frequently asked questions
+* Obtaining and Building GRUB:: How to obtain and build GRUB
+* Reporting bugs::              Where you should send a bug report
 * Index::
 
 @end menu

docs/tutorial.texi

@@ -276,6 +276,9 @@ command. An example is to set @samp{vga} to @samp{ext}:
 grub> kernel /vmlinuz root=/dev/hda1 vga=ext
 @end example
 
+See the documentation in the Linux source tree, for the complete
+information on the available options.
+
 If you use initrd, execute the command @command{initrd} after
 @command{kernel}:
 

docs/user-ref.texi

@@ -1,7 +1,9 @@
 @node Introduction
 @chapter Introduction
 
-This chapter documents the history and the features of GRUB.
+This part documents the user-visible aspect of GRUB. If you are looking
+for the information on the internals, see the Programmer Reference
+Manual (@pxref{Hacking}).
 
 @menu
 * History::                     From maggot to house fly.