I really had the old verstion of VirtualBox ( V: 3.1. 4r57640.) and I have created a VM with fixed size virtual disk. However, I have found out that Virtual disk file was created under the IDE controller.

When I have updated inot the most recent version of VBox(VirtualBox-4.3.6-91406), then created a new VM with a dynamica size virtual disk. I have found out that Virtula disk ifle was created under 'SATA Cotroller'.

I really havn't been asked to choose which conroller I should use, IDE or SATA while creating a VM with either version of VBox. Thus, why was IDE conroller used on the first version of VBox, however, ASAT controller used in the second version of VBox?
Also, I found that the path of the old version of VBox is 'D:\Users\Mohammad\.VirtualBox'
However, the path of the new version of VBox is 'D:\Users\Mohammad\VirtualBox VMs'
