--- a/FileDialog.st	Sat May 07 21:49:15 2016 +0200
+++ b/FileDialog.st	Sun May 08 00:12:39 2016 +0200
@@ -1767,7 +1767,12 @@
         self warn:'Cannot open drive %1' with:newFile asFilename volume.
     ].
 
-    newDrive := curSel notEmpty ifTrue:[ curSel first volume ] ifFalse:[ 'C:' ].
+    newDrive := curSel notEmpty 
+                    ifTrue:[ curSel first volume ] 
+                    ifFalse:[ 
+                        OperatingSystem isMSWINDOWSlike ifTrue:['C:'] ifFalse:['/']
+                        "/ Filename defaultVolumeName.
+                    ].
     self selectedDeviceDrive value:newDrive.
 !