File smartmontools-removable.patch of Package smartmontools
--- smartd.conf
+++ smartd.conf
@@ -20,18 +20,21 @@
# Directives listed below, which will be applied to all devices that
# are found. Most users should comment out DEVICESCAN and explicitly
# list the devices that they wish to monitor.
-DEVICESCAN
+# Adding -d removable prevents error messages after disconnecting of
+# monitored removable discs.
+#DEVICESCAN -d removable
+DEVICESCAN -d removable
# Alternative setting to ignore temperature and power-on hours reports
# in syslog.
-#DEVICESCAN -I 194 -I 231 -I 9
+#DEVICESCAN -d removable -I 194 -I 231 -I 9
# Alternative setting to report more useful raw temperature in syslog.
-#DEVICESCAN -R 194 -R 231 -I 9
+#DEVICESCAN -d removable -R 194 -R 231 -I 9
# Alternative setting to report raw temperature changes >= 5 Celsius
# and min/max temperatures.
-#DEVICESCAN -I 194 -I 231 -I 9 -W 5
+#DEVICESCAN -d removable -I 194 -I 231 -I 9 -W 5
# First (primary) ATA/IDE hard disk. Monitor all attributes, enable
# automatic online data collection, automatic Attribute autosave, and