comments about FlashBios page

Hello,
following the procedure in
https://wiki.debian.org/FlashBIOS
the resulting image is unbootable.

If you attempt to boot it,
freedos. pause there.

man (8) mkdosfs can not make bootable filesystems.

However the image can be made 
with mtools (if target pc supports int13h floppy) and nasm.
(http://users.otenet.gr/~omj2kv/uefi.html)
e.g.(20Mib)  mformat -C -t 20 -h 64 -s 32 K:

the resulting is bootable and can be written with dd to usb,
or boot with grub(2) (in bios mode)