Syslinux - Nov 2006 - How to determine your bootloader from the kernel

If you have a multiboot kernel which is booted by
syslinux/pxelinux/isolinux, etc., is there a way to determine who actually
is the bootloader among the three?

I'm wondering if the multiboot header or any part of memory has a consistent
identifier somewhere.

thanks,
Ram

Ram Yalamanchili wrote:
> If you have a multiboot kernel which is booted by
> syslinux/pxelinux/isolinux, etc., is there a way to determine who actually
> is the bootloader among the three?
> 
> I'm wondering if the multiboot header or any part of memory has a
consistent
> identifier somewhere.
> 
I don't think Multiboot has this.

	-hpa

On Fri, Dec 01, 2006 at 12:00:03PM -0800, syslinux-request at zytor.com
wrote:
> If you have a multiboot kernel which is booted by
> syslinux/pxelinux/isolinux, etc., is there a way to determine who actually
> is the bootloader among the three?
> 
> I'm wondering if the multiboot header or any part of memory has a
consistent
> identifier somewhere.
The multiboot "Bootloader ID" field is filled in with mboot.c32's
version string, but doesn't say which derivative of SYSLINUX called it.

It should be a very minor patch to append the syslinux version string to
it (call syslinux with ax=0001 to get the string, increase mbi_size
appropriately and do some more strcpying at the bottom of main()).

Tim.

-- 
Tim Deegan                           (My opinions, not the University's)
Systems Research Group
University of Cambridge Computer Laboratory