Hello John,

read please the threat in the debian-cloud forum from /Date/: Fri, 6 Mar 2026  "Debian images for Raspberry 4 and 5 from https://cloud.debian.org/images/cloud do not boot on RPi".
I think, it's the same problem.
https://lists.debian.org/debian-cloud/2026/03/msg00000.html
Also you can read the Debian Bug report  #1102607.

If you find a solution, please post it here in the forum as well; I, for one, would still be interested in it.

Heiko

Am 05.05.26 um 18:50 schrieb John Boxall:
As a newbie to Debian on the Raspberry Pi, I tried booting the latest Debian arm64 netinst ISO without success. I used "dd" to copy the ISO image to a USB stick (nothing else on the stick), but when I tried to boot I get an error that the 2K block size is not supported by the RPi boot firmware and the boot fails.

Booting by USB is one of the available boot options.

Is there more preparation that needs to be done to the USB stick?

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