win98se floppy fails to boot with isapc machine

QEMU emulator version 4.1.50 (commit 50d69ee0d)

floppy image from:
https://winworldpc.com/download/417d71c2-ae18-c39a-11c3-a4e284a2c3a5

$ qemu-system-i386 -M isapc -fda Windows\ 98\ Second\ Edition\ Boot.img
SeaBIOS (version rel-1.12.1-0...)
Booting from Floppy...
Boot failed: could not read the boot disk