diff -r 466a0df5c15a -r ea2434cf3670 userlibandfileserver/fileserver/sfile/sf_svr.cpp
--- a/userlibandfileserver/fileserver/sfile/sf_svr.cpp	Tue May 04 16:57:20 2010 +0100
+++ b/userlibandfileserver/fileserver/sfile/sf_svr.cpp	Tue May 04 18:23:12 2010 +0100
@@ -1314,8 +1314,13 @@
 
                 return KErrNone;
             }
-
-            
+            case EFSysExtensionsSupported:
+            {
+                TBool supported = pDrive->GetFSys()->IsExtensionSupported();
+                TPckgBuf<TBool> data(supported);
+                aRequest->WriteL(KMsgPtr2,data);
+                return KErrNone;
+            }
 		default:
 			{
 			return KErrNotSupported;