diff --git a/EdkModulePkg/Bus/Pci/IdeBus/Dxe/ide.c b/EdkModulePkg/Bus/Pci/IdeBus/Dxe/ide.c
index c41d995879..7d9d6375a4 100644
--- a/EdkModulePkg/Bus/Pci/IdeBus/Dxe/ide.c
+++ b/EdkModulePkg/Bus/Pci/IdeBus/Dxe/ide.c
@@ -716,7 +716,12 @@ DetectIDEController (
   //
   // Master Error register is not 0x81, Go on check Slave
   //
-
+  
+  //
+  // Stall 10ms to wait for slave device ready
+  //
+  gBS->Stall (10000);
+  
   //
   // select slave
   //