-# by-label/by-uuid (filesystem properties)
-ENV{DEVTYPE}=="partition", IMPORT{program}="vol_id --export $tempnode"
+# skip unpartitioned removable media devices from drivers which do not send "change" events
+ENV{DEVTYPE}=="disk", KERNEL!="sd*|sr*", ATTR{removable}=="1", GOTO="persistent_storage_end"
+
+# import filesystem metadata
+IMPORT{program}="vol_id --export $tempnode"
+
+# by-label/by-uuid links (filesystem metadata)