I have created /dev/fd0 via. # mknod /dev/fd0 b 2 0 # mkdir floppy Results: mknod never reported any problem, But (!) # mount /dev/fd0 floppy Works in Debian 7 (d-i), and fails in Debain 8 (d-i) with message: mount: mounting /dev/fd0 on floppy failed: No such device or address -- -Alexey Eromenko "Technologov"