Re: Procedure do Install NetBSD in a Macbook White 2006

Hello Martin,

I can't explain why, but this computer won't boot with any 64-bit OS, but
32-bit works!

How can I explain this?

Regards,
Marcos Onisto
Mobile: +55 11 9 8446-7282
Skype: mlonisto
http://br.linkedin.com/in/marcosonisto


On Thu, May 7, 2020 at 2:38 AM Martin Husemann <[email protected]> wrote:

> On Thu, May 07, 2020 at 12:08:50AM -0300, Marcos Onisto wrote:
> > Hello NetBSD,
> >
> > I really like to contribute with you and I wrote one procedure how to
> > intall NetBSD 8.1 in a Macbook White 2006 like below
>
> I think it would have been easier with NetBSD 9 as that directly allows
> a UEFI installation without tricks.
>
> > Macbook White - A1181 (Late 2006)
> > CPU: Core 2 Duo 2.0GHz - T7200
> > Mem: 4 GB RAM - 667
> > EFI: 32 Bits
> >
> > Even though the CPU is 64 Bits, the EFI is 32 Bits, this way only the 32
> > Bits Operationg System can be installed in this computer.
>
> I don't think this is true for NetBSD. On my amd64 UEFI installation I have
> (on the EFI partition):
>
> efi/boot:
> total 454
> -r-xr-xr-x  1 root  wheel  239575 Feb  9 12:33 bootia32.efi
> -r-xr-xr-x  1 root  wheel  224482 Feb  9 12:33 bootx64.efi
>
> and file says:
>
> efi/boot/bootia32.efi: PE32 executable (EFI application) Intel 80386
> (stripped to external PDB), for MS Windows
> efi/boot/bootx64.efi:  PE32+ executable (EFI application) x86-64 (stripped
> to external PDB), for MS Windows
>
> So your firmware shoud be able to load efi/boot/bootia32.efi and that will
> be able to boot either a 32bit i386 or a 64bit amd64 kernel.
>
> With 4G RAM the difference is typically not very important though.
>
> Martin
>