hard disk installation method fails

[lsg]

this is quite unbelievable, it's most widely-used platform: amd64
installer says "No kernel modules found", probably due to kernel mismatch

debian-11.6.0-amd64-netinst.iso is at sdb1, vfat partition, i've checked 
it with sha256sum

vmlinuz and initrd.gz are copied from:

http://ftp.sunet.se/debian/dists/bullseye/main/installer-amd64/current/images/hd-media/