> Personally I create boot floppies on a FreeBSD also, I've not worried about
> the bs=36k part though, and I've used the raw device.
> 
> Just do a 'dd if=boot.fs of=/dev/rfd0'.

The advantage of using the block device (with a block size) is that it
ought to be much faster. Actually, that might be true of using the raw
device with a block size too.

-- Dan