Hello, I repeated the test with current daily images: Directory: https://d-i.debian.org/daily-images/armhf/daily/netboot/SD-card-images/ Concatenated the two files: - firmware.none.img.gz - partition.img.gz
U-Boot Version: 2021.01~rc4+dfsg-2 Installation starts and the external SD-Card was selected for guided partitioning. At the end, there was the messagt: "GRUB installation failed" "The grub-pc package failed to install into /target/." "Without the GRUB boot loader, the installed system will not boot." Best regards and thank you for your support. Bernhard
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