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Re: Install on Pi3

Sorry for top posting. If the instructions for the Pi4 are any guide you need to get the EFI bootloader for the Pi3 (if such a thing exists). The Generic ARM64 image expects that the boot code will execute /EFI/boot/<something>.EFI. That file finds the NetBSD partition and loads the kernel from there.

The standard RPi bootcode looks for kernel.img (or kernel7.img) which is the operating system kernel (there are a few files in between, but I'm not sure which is which). NetBSD can take a kernel and convert it to .img format. That should be your backup plan, although you'd need a NetBSD machine to do this. It doesn't have to be an aarch64 machine, though.

The color mesh is usually a sign that the Pi couldn't boot. There should also be a green led that blinks 4 times to let you know that a boot failed (might only be for Pi4).

But the easiest way to run NetBSD on an RPi is to download a pre-built image. Check the port-arm list archives for posts by Jun Ebihara. I'm not sure if his Pi3 image in 32 or 64 bit, though.


Jason M.

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On Sep 16, 2021, at 7:06 PM, Greg Troxel <> wrote:

James Cloos <> writes:

i tried using:

but all i get is a red-yellow-blue-cyan colour mesh
on the monitor.

Does that colour mesh imply a failed boot?

I hope somebody who knows more will help you, but yes, I believe that
implies it didn't work.

Presumably you did gunzip and then dd. Also presumably a RPI2.1, 3, or
4, as earlier ones do not have aarch64.

You might try with no card, to see if you get the same syndrome.

(w/out net and secsh it is impossible for me to see what is wrong...)

I would try hooking up a serial console if you have the cable.

(I guessed that HEAD holds current. Is that accurate?)

Yes. Current is the logical name, and HEAD is the CVS branch

I should note that i do not have any other bsd running, and thus no
access to the ufs fs.

You should be able to look at the uSD contents and see a partition table
and I would expect a dos fs with boot stuff.

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