Re: RPi 4b Wifi Device

["Thomas D. Dean" <tomdean%wavecable.com@localhost>]

On 4/20/24 15:29, Michael Cheponis wrote:
> I run an RPi 4B/8G with external USB SSD drive; I do this because my uSD 
> cards were getting worn out after about a year of use; I've had no such 
> problems with my Samsung 870 EVO nor Samsung SSD T7.
>
> I use the built-in GigE adaptor on the RPi 4B, because it's convenient 
> as I have wired ethernet most places.   So I can't help with WiFi.
>
> I have been running an RPi 3 from a Lexar 64B Thumb Drive since June 
> 2019 - no problem there, either.

I use SanDisk Extreme Pro 128GiB flash drives in the RPi 4b USB 3 port, 
sometimes with a 6" USB 3 cable.

I can always boot RPi OS on these drives. I have never been able to boot 
NetBSD 10.

I downloaded the arm64.img, and RPi4_UEFI_Firmware_v1.35.zip. On a Linux 
desktop:
  dd if=arm64.img of=/dev/sda bs=1M
and, then I replace the corresponding files from 
RPi4_UEFI_Firmware_v1.35.zip.
  mount /de3v/sda1 /mnt
  cd /mnt
  unzip ~/NetBSD/RPi4_UEFI_Firmware_v1.35.zip

When I attempt to boot, I see the color flash, then a cursor at the top 
left of the screen, then the screen goes blank.

The flash drive shows lots of accesses during this process and then 
shows access flashes in groups of 3 or 4. I think this indicates an 
unreadable file, I think.

When I do the the same actions with an SD card, NetBSD boots.

What do you do?

Tom Dean