Re: Booting Linux and DOS on a boot cd with GRUB

[Felix Miata]

On 2008/01/24 08:36 (GMT-0600) Weinberg, Jon apparently typed:

> I currently have an iso of Helix (uses knoppix) and I'm trying to modify
> the grub menu to add an option for booting to a DOS environment.  I have
> all the DOS boot files in the iso however whenever I boot the cd, grub
> returns an "Error 15," file not found.  Unfortunately it doesn't specify
> which file(s).  Here's the only modification I've made to grub, and it's
> in the menu.lst file:

> I added:

> title  Asset Delete & PDWipe
> root   (cd)/boot/pdwipe/
> kernel (cd)/boot/pdwipe/COMMAND.COM
> chainloader  (cd)/boot/pdwipe/MSDOS.SYS
> chainloader  (cd)/boot/pdwipe/IO.SYS

> I'm pretty sure this is wrong, but I've not found a single resource that
> explains how to do exactly what I'm doing.  I've also attached the
> menu.lst file as a whole if that helps.  I greatly appreciate anyone's
> help with this.

I don't know the answer, but maybe what I do know will help you figure it out.

COMMAND.COM is equivalent to /bin/sh, a command interpreter dependent on an
already loaded kernel.

Depending on the DOS version, either IO.SYS and MSDOS.SYS together function
as a kernel, or IO.SYS functions alone as a kernel. In any event, the normal
loading order for DOS is the reverse of the order you have listed.

To see which file is not found, load those commands from a grub prompt
instead of menu.lst.

Mounting and examining an ultimatebootcd iso file might prove instructive
too. Maybe what you really want is isolinux rather than grub.
-- 
"In the beginning was the Word, and the Word was
with God, and the Word was God." John 1:1 NIV

 Team OS/2 ** Reg. Linux User #211409

Felix Miata  ***  http://mrmazda.no-ip.com/