--- voyage-current/usr/local/sbin/format-cf.sh-x	2009-09-23 17:20:21.000000000 +0200
+++ voyage-current/usr/local/sbin/format-cf.sh	2009-09-29 16:27:56.179134952 +0200
@@ -1,25 +1,92 @@
 #!/bin/sh
 
-if [ -z $1 ] ; then
+TARGET_DISK=""
+TARGET_PART=""
+SYSTEM_BOOT="1"
+DONT_ASK="0"
+
+# no here-document here. 
+# this may be called from a read-only (live) file system
+# where the mandatory tmp file for here-douments can't be 
+# created. ottherwise you may get:
+# "cannot create temp file for here document: Read-only file system"
+usage () {
+	echo "$0 -t <disk> [ -b { 1 | 2 | 3 | 4 } ] [ -y ]"
+	echo "    -t  target disk device"
+	echo "    -b  target partition number (default: 1)"
+	echo "    -y  don't prompt for confirmance (default: prompt)"
+	echo "legacy mode:"
 	echo "$0 <device>"
-	exit
+	echo ""
+}
+
+
+#
+# usage:
+#	doopt "$@"
+#
+# returns:
+#	$TARGET_DISK
+#	$SYSTEM_BOOT
+#	$DONT_ASK
+#
+doopt () {
+	# for backward compatibility	
+	if [ $# = 1 ]; then 
+		TARGET_DISK="$1"
+		return;
+	fi
+
+	local x
+	while [ $# -gt 0 ]; do
+		x="$1"; shift
+
+		case "$x" in 
+		-t) TARGET_DISK="$1"
+			shift
+			;;
+		-b) SYSTEM_BOOT="$1"
+			shift
+			;;
+		-y) DONT_ASK=1
+			;;
+		*) usage
+			exit 1
+			;;
+		esac
+	done
+}
+
+doopt "$@"
+
+if [ -z "$SYSTEM_BOOT" -o -z "$TARGET_DISK" ]; then 
+	usage
+	exit 1
+fi 
+
+if [ "$DONT_ASK" = 0 ]; then 
+	echo "Press ENTER to continue to format flash memory on $TARGET_DISK"
+	read a
 fi
 
-echo "Press ENTER to continue to format flash memory on $1"
-read a
+TARGET_PART=$TARGET_DISK$SYSTEM_BOOT
+case "$SYSTEM_BOOT" in
+	1) SFDISKCMD='0,,L,*\n;\n;\n;'
+	   ;;
+	2) SFDISKCMD='0,0,\n0,,L,*\n;\n;'
+	   ;;
+	3) SFDISKCMD='0,0,\n0,0,\n0,,L,*\n;'
+	   ;;
+	4) SFDISKCMD='0,0,\n0,0,\n0,0,\n0,,L,*'
+	   ;;
+	*) usage
+           exit 1
+	   ;;
+esac
+	
 
-DEV=$1
-#[ -b $DEV ] && fdisk $DEV < `dirname $0`/fdisk.cmd
-[ -b $DEV ] && fdisk $DEV <<EOF
-o
-n
-p
-1
-
-
-a
-1
-w
-EOF
-[ -b "$DEV"1 ] && mkfs.ext2 "$DEV"1 
-[ -b "$DEV"1 ] && tune2fs -i 0 -c 0 "$DEV"1 -L ROOT_FS
+[ -b "$TARGET_DISK" ] && echo -e "$SFDISKCMD" | sfdisk "$TARGET_DISK"
+[ -b "$TARGET_PART" ] && { 
+	mkfs.ext2 $TARGET_PART
+	tune2fs -i 0 -c 0 $TARGET_PART -L ROOT_FS
+}