Debian images for Raspberry 4 and 5 from https://cloud.debian.org/images/cloud do not boot on RPi

"[email protected]" <[email protected]>
Newsgroups gmane.linux.debian.ports.arm
Message-ID <[email protected]>
So far, I have been using images from this website to install Debian on 
a Raspberry Pi: https://raspi.debian.net/tested-images/
I have written the images to an SD card several times in the past, and 
they are then bootable on a Raspberry Pi.

"It is stated at https://raspi.debian.net//:
Raspberry Pi Debian images
This project has been superseded"

"Are you looking for pure Debian images to use on your Raspberry Pi? 
Great! However, the project that built them in this web page 
(https://raspi.debian.net/) has been superseded by the images generated 
by the Debian Cloud Images."

You can find the daily generated images at: Debian 13 “Trixie” (Stable): 
Image download (for example) -> 
https://cloud.debian.org/images/cloud/trixie/daily/latest/debian-13-raspi-arm64-daily.tar.xz
The names debian-13-raspi-arm64.tar.xz, 
debian-13-nocloud-arm64-20250806-2196.tar.xz, and 
debian-14-raspi-arm64-daily.tar.xz clearly suggest to me that the images 
could be used for a Raspberry Pi.


On https://raspi.debian.net/ i can read:  "Do note that the images are 
only available for the 64-bit-capable members of the Raspberry Pi Family 
(that is, families 3, 4 and 5). RPi 5 only works with Debian 14 “Forky” 
(testing) or Sid (unstable)."
As an alternative, I download the Forky image from 
https://cloud.debian.org/images/cloud/forky/daily/latest/debian-14-raspi-arm64-daily.tar.xz

After unpacking, I write the disk.raw with the Raspberry Pi Imager or 
with the program "Write for Drive Images/gnome-disk-utility 46.1" or 
also with dd
sudo dd if=disk.raw of=/dev/sdb bs=10M status=progress
[sudo: authenticate] Password:
3221225472 bytes (3.2 GB, 3.0 GiB) copied, 145.161 s, 22 MB/ss
307+1 records in
307+1 records out
3221225472 bytes (3.2 GB, 3.0 GiB) copied, 145.164 s, 22 MB/s

The result is always the same, as expected - The boot process does not 
start, even though the SD card is recognized.
  -> see image https://forums.debian.net/download/file.php?id=5088

I used various SD cards, always did a sha512sum, and also tried the 
oldest available image as a test.
The result is always the same, as expected - The boot process does not 
start, even though the SD card is recognized.
I get the same result with a Raspberry Pi 4: the Raspberry Pi does not 
boot with the SD card I created.

Is it a bug that all SD cards created with debian-1[34]-raspi-arm64.* 
images from https://cloud.debian.org/images/cloud/ do not boot from a 
Raspberry Pi 4 and 5?

Unfortunately, I cannot find any information at 
https://cloud.debian.org/images/cloud/ or 
https://wiki.debian.org/Cloud#FAQ about other things that might need to 
be taken into account or done in addition, if additional steps are 
necessary since the changeover to ensure that the SD cards created are 
bootable.
Has anyone managed to boot a Raspberry Pi 4 or 5 with an SD card created 
using https://cloud.debian.org/images/cloud/?

Does anyone have any information about my problem or any tips?
Does anyone have a Raspberry Pi Model 4 or 5 to test and a few minutes 
to refute or confirm my error observation?

thanks
Heiko
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