Re: Can't bootNetBSD 11 on RaspberryPi 4 from SDCARD - black screen (HDMI)

[Ramiro Aceves <ea1abz%gmail.com@localhost>]

En Thu, Oct 15, 2026 at 09:54:54PM +0100, Piotr Kolasiński escribió:
> OK I can do the configuration with serial console (I have to fine only
> USB to serial cable ;-) ). But does it mean that later (after reboot)
> HDMI will be working or not? And what about 3GB limit from UEFI (what is
> described in some places).
> 
> Piotr


Hi Piotr,

Sorry, your email ended here  in the spam folder.

If you have a keyboard and attached monitor, the easiest way is to flash 
the SD card with this image after gunziping it:

https://cdn.netbsd.org/pub/NetBSD/NetBSD-11.0/evbarm-aarch64/binary/gzimg/arm64.img.gz

the SD Card will have two partitions, MSDOS and FFS. Mount the
MSDOS parition in another BSD or Linux computer. Unpack using "unzip" the contents of the
UEFI firmware inside the MSDOS parition:

https://github.com/pftf/RPi4/releases/download/v1.50/RPi4_UEFI_Firmware_v1.50.zip

Unmount the SD Card, put it in the RPi4 and reboot. Enter UEFI settings (F2 if I recall
 it correctly) and remove  the 3GB RAM limit and tweak the boot settings to boot from the SD card.

Regards.
Ramiro.


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