. less verbose cd /usr debugging

. save random data only if /usr is mounted rw, don't display error otherwise

etc/rc

@@ -90,7 +90,7 @@ start)
     		usrdev="`expr $imagedev + 1`"
     		usr_roflag="-r"
     		usr="`/bin/dev2name $usrdev`"
-    		echo "Setting /usr to mount readonly from cd: $usrdev -> $usr"
+    		echo "Setting /usr on cd is $usr"
     fi
  
     # Mount the /usr partition unless this is a single floppy Minix.

etc/usr/rc

@@ -154,15 +154,14 @@ start)
 
 ;;
 stop|down)
-    	# Save random data.
-	bootcd="`/bin/sysenv bootcd`"
-    	if dd if=/dev/random of=$RANDOM_FILE.new bs=1024 count=1 2>/dev/null
-    	then
+    	# Save random data, if /usr is mounted rw.
+	if grep ' \/usr .*rw' /etc/mtab >/dev/null
+	then
+	  if dd if=/dev/random of=$RANDOM_FILE.new bs=1024 count=1 2>/dev/null
+    	  then
     		mv $RANDOM_FILE.new $RANDOM_FILE
-	else
-		if [ "$bootcd" != 1 ]
-		then
-			echo 'Failed to save random data.'
-		fi
+	  else
+		echo 'Failed to save random data.'
+	  fi
 	fi
 esac