#!/bin/sh
#
#	do like as disklabel -B
#			--written by Yasha
#
#	usage: writeboot <boot_file> <boot_device(raw)>
#

case "$#" in
 2)	;;
 *)	echo "usage: `basename $0` fdboot /dev/rfd?a"	>&2
	exit 1;;
esac

boot="$1"
rootdev="$2"
temp=/tmp/writeboot$$

set - `ls -lLd "$boot"`
case "$5" in [1-9]*) :;; *) exit 1;; esac
nblock=`expr \( $5 + 1023 \) / 1024 `

trap "rm -f $temp; exit 1" 1 2 3 15
rm -f $temp
(	dd if="$boot" bs=64 count=1
	dd if="$rootdev" bs=1024 count=1 | dd bs=4 skip=16 count=69
	dd if="$boot" bs=340 skip=1	) > $temp

cat $temp /dev/zero | dd bs=1024 count=$nblock of="$rootdev"
rm -f $temp