Background
This page is all based on the work of Dag Sverre Seljebotn, at http://www.kazak.ws/evo (Linux on Compaq EVO T20 HOWTO)
These notes assume that you will create a directory called t20 in
your home directory and do everything in there.
A basic primer on diff and patch can be found at http://www.linuxjournal.com/article/1237
Note: at the least you need GCC installed in order to build grub. If you
are running Debian or Ubuntu, installing the build-essential package will
probably get you enough. Look at
http://packages.debian.org/stable/devel/build-essential
if you need to find out what is in build-essential.
Download and unpack sourcecode
Make the working directory, and change into that directory:
$ mkdir t20
$ cd t20
Get grub-0.97.tar.gz from the ftp site listed at the top of
http://www.gnu.org/software/grub/grub-legacy-download.en.html
and save it into your t20 directory.
Unpack it with:
$ tar -xzvvf grub-0.97.tar.gz
(big list of files appears here)
This will create a directory called grub-0.97 with all the sourcecode
in it.
Get the patch
Create a file called devosl-grub.patch in the t20 directory containing this:
Apply the patch
In the grub-0.97 directory, run the patch command as follows and it will
display the list of files it modifies:
$ patch -p1 <../devosl-grub.patch
patching file config-devosl.sh
patching file presetmenu-DEvoSL
patching file stage1/stage1.S
patching file stage2/asm.S
patching file stage2/builtins.c
patching file stage2/common.c
patching file stage2/start.S
Configure and compile
In the grub-0.97 directory, do this:
$ chmod +x config-devosl.sh
$ ./config-devosl.sh
(list of various checks appears here, hopefully without error messages)
$ make clean
(list of things being tidied)
$ make all
(list of compiler messages, hopefully with only warnings and no errors)
All done! (hopefully)
Note that nothing interesting will be obvious - the two files we want are:
t20/grub-0.97/stage1/stage1t20/grub-0.97/stage2/stage2