diff --git a/lib/omnibus/packagers/mac_dmg.rb b/lib/omnibus/packagers/mac_dmg.rb
index <HASH>..<HASH> 100644
--- a/lib/omnibus/packagers/mac_dmg.rb
+++ b/lib/omnibus/packagers/mac_dmg.rb
@@ -25,9 +25,9 @@ module Omnibus
     end
 
     setup do
-      clean_disks
       create_directory(dmg_stage)
       remove_file(writable_dmg)
+      clean_disks
     end
 
     build do
Move clean disks after dmg_stage directory creation so that the command can execute correctly.