Re: Booting a new 64-bit OS with grub 0.97

[Michael Evans]

x86_64 Linux is loaded by grub on many computers every day.  -However- I believe virtually every last one of those systems starts out in the 32 bit compatibility mode.  I then believe something in the initial stages of the kernel switches the cpu from 32 bit to 64 bit mode.  In fact, it's probably literally starting out in the digitally stone-age x86 'real mode'.

Grub also chainloads other bootloaders like the ntloader (by reference of the partition it lives in).  If your kernel can run on your native platform without a bootloader installed, and grub can also run on that same platform, it's probably possible to chainload it in failing anything else.

On Fri, Jul 17, 2009 at 4:11 AM, Diogo F. S. Ramos <address@hidden> wrote:

I know grub 0.9x is not supported anymore but I've got to ask: Is it
possible to boot a multiboot compliant 64-bit OS with grub 0.97? Or a
64-bit OS cannot be compliant with the legacy grub?

I am trying to port a little 32-bit OS on its very early days to a
64-bit version. The original version boots using grub but the 64-bit
don't. I keep receiving the error 13.

Any thoughts or leads on this would be very much appreciated.

--
Diogo F. S. Ramos


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