Re: Can't boot NetBSD from SDcard via UEFI on Raspberry Pi 5 (8GB D0) - sdmmc1: couldn’t enable card: 60

[Nick Hudson <nick.hudson%gmx.co.uk@localhost>]

> On 3 Jan 2026, at 06:17, Tim McIntosh <tmcintos%eskimo.com@localhost> wrote:
> 
>> On Jan 2, 2026, at 2:12 AM, Nick Hudson <nick.hudson%gmx.co.uk@localhost> wrote:
>> 
>> On 02/01/2026 14:00, Tim McIntosh wrote:
>>> Hello,
>>> I recently purchased a Raspberry Pi 5 (8GB, D0 stepping) and have been trying to boot NetBSD on it via UEFI (following the instructions on the wiki <https://wiki.netbsd.org/ports/evbarm/raspberry_pi/>), but have had no luck.
>>> I believe I’ve tried all of the following:
>>> https://nycdn.netbsd.org/pub/NetBSD-daily/netbsd-10/latest/evbarm-aarch64/binary/gzimg/arm64.img.gz
>>> https://nycdn.netbsd.org/pub/NetBSD-daily/netbsd-11/latest/evbarm-aarch64/binary/gzimg/arm64.img.gz
>>> https://nycdn.netbsd.org/pub/arm/HEAD/20260101113528Z/NetBSD-HEAD-aarch64-20260101113528Z-generic.img.gz
>>> I’ve also tried fiddling with the UEFI settings, with no improvement.
>>> In all cases, boot fails after these errors:
>>> [4.3283271] sdmmc1: couldn’t send I/O OCR
>>> [4.3383275] sdmmc1: couldn’t enable card: 60
>>> [7.4883652] sdmmc1: couldn’t send I/O OCR
>>> [7.4983656] sdmmc1: couldn't enable card: 60
>>> [10.3984004] sdmmc0: couldn't enable card: 60
>>> Is this a known issue?
>> 
>> yes, it is.
> 
> Thank you for your reply. Is there an existing PR? I couldn’t find one.

I don’t think so. Feel free to create one.

> 
>> USB or NVME (via hat) storage is best for root anway.
> 
> Good to know. I wish I had known this before I spent money on the SD card and official case. I was hoping to avoid external storage or using a HAT since it won’t fit in the case with fan + lid <https://forums.raspberrypi.com/viewtopic.php?t=370927>. I could try using a USB SD card adapter if that is expected to work.

It *should* work, but there are never any guarantees.

> 
> Perhaps someone with access could update the wiki page so that others aren’t misled into spending time/money on something that’s not expected to work?

I’ll update the wiki.

It’s a bug. Someone with enough knowledge and time should be able to squish it. 


> The current page gives the strong impression that using an SD card is the preferred approach and should be expected to work.

It certainly is the most convenient, but it certainly isn’t the most performant.