diff -Naur udev-103/extras/rule_generator/write_cd_rules udev-103pk/extras/rule_generator/write_cd_rules
--- udev-103/extras/rule_generator/write_cd_rules	2006-10-20 09:43:35.000000000 -0300
+++ udev-103pk/extras/rule_generator/write_cd_rules	2006-10-26 15:34:51.000000000 -0300
@@ -50,29 +50,60 @@
 	exit 1
 fi
 
-# Prevent concurrent processes from modifying the file at the same time.
-lock_rules_file
 
-# Check if the rules file is writeable.
-choose_rules_file
+if ! egrep "^ENV{ID_CDROM}==\"\?\*\", ENV{ID_PATH}==\"$ID_PATH\"" /etc/udev/rules.d/* &>/dev/null ; then 
+	# Prevent concurrent processes from modifying the file at the same time.
+	lock_rules_file
+
+	# Check if the rules file is writeable.
+	choose_rules_file
+
+	link_num=$(find_next_available 'cdrom[0-9]*')
+	[ "$link_num" = "" ] && link_num=0
+
+	match="ENV{ID_CDROM}==\"?*\", ENV{ID_PATH}==\"$ID_PATH\""
+
+	comment="$ID_MODEL ($ID_PATH)"
+
+		write_rule "$match" "cdrom$link_num" "$comment"
+		[ "x$(find_next_available 'cdrom')" = "x" ] && \
+			write_rule "$match" "cdrom"
+
+		if [ "$ID_CDROM_DVD" ]; then
+			write_rule "$match" "dvd$link_num"
+			[ "x$(find_next_available 'dvd')" = "x" ] && \
+				write_rule "$match" "dvd"
+			if [ "$ID_CDROM_DVD_R" -o "$ID_CDROM_DVD_RW" -o "$ID_CDROM_DVD_RAM" ]; then
+				write_rule "$match" "dvdrw$link_num"
+				[ "x$(find_next_available 'dvdwriter')" = "x" ] && \
+					write_rule "$match" "dvdwriter"
+				[ "x$(find_next_available 'writer')" = "x" ] && \
+					write_rule "$match" "writer"
+			fi
+		fi
+
+		if [ "$ID_CDROM_CD_R" ]; then
+			write_rule "$match" "cdr$link_num"
+			[ "x$(find_next_available 'cdwriter')" = "x" ] && \
+				write_rule "$match" "cdwriter"
+			[ "x$(find_next_available 'cdr')" = "x" ] && \
+				write_rule "$match" "cdr"
+			if [ "$ID_CDROM_CD_RW" ]; then
+				write_rule "$match" "cdrw$link_num"
+				[ "x$(find_next_available 'cdrw')" = "x" ] && \
+					write_rule "$match" "cdrw"
+				[ "x$(find_next_available 'writer')" = "x" ] && \
+					write_rule "$match" "writer"
+			fi
+			[ "x$(find_next_available 'writer')" = "x" ] && \
+				write_rule "$match" "writer"
+		fi
 
-link_num=$(find_next_available 'cdrom[0-9]*')
 
-match="ENV{ID_CDROM}==\"?*\", ENV{ID_PATH}==\"$ID_PATH\""
+	unlock_rules_file
 
-comment="$ID_MODEL ($ID_PATH)"
-
-	write_rule "$match" "cdrom$link_num" "$comment"
-[ "$ID_CDROM_CD_R" -o "$ID_CDROM_CD_RW" ] && \
-	write_rule "$match" "cdrw$link_num"
-[ "$ID_CDROM_DVD" ] && \
-	write_rule "$match" "dvd$link_num"
-[ "$ID_CDROM_DVD_R" -o "$ID_CDROM_DVD_RW" -o "$ID_CDROM_DVD_RAM" ] && \
-	write_rule "$match" "dvdrw$link_num"
-
-unlock_rules_file
-
-echo $SYMLINKS
+	echo $SYMLINKS
+fi
 
 exit 0