I downloaded the minimal image with name bbai64-debian-11.7-minimal-arm64-2023-05-06-4gb.img.xz
It is an image that should not flash the eMMC, but it does. The previous version, dated 2023-05-03, works as expected. Please check the extlinux.conf-file.
odd, looking at the flashed microSD:
label Linux microSD
append root=/dev/mmcblk1p2 ro rootfstype=ext4 rootwait net.ifnames=0 quiet
BeagleBoard.org Debian Bullseye Minimal Image 2023-05-06
Really odd. I checked again and couldn’t see anything wrong. I must have flashed the wrong image onto my SD-card.
Sorry for the confusion.