Creating VirtualBox-Image as "harddisk" by shell-script

Hello,

I'm trying to create a VirtualBox "harddisk" and put an dd-image into it. This image shoudn't work as a virtual maschine, I just want to be able to mount it to an folder. How can I do this with an shell script?

Sebi

---------- Post updated at 10:36 AM ---------- Previous update was at 09:36 AM ----------

Okay, I found a way to create it with the following command :

VBoxManage createvdi -filename NameImage.vdi -size 2048 -static -type writethrough -register

But I still don't know, how to add a file into this vdi? Can someone help?
:confused::confused::confused: