I've been given a job: open a XXXX.vhd file and extract datas from an SQL folder.
The problem is that I've tried this:
- install "WMWare" then open it. "File unknown" as a result.
- install "Oracle VM VirtualBox" then open it. "File unknown" as a result.
- install "VHD Attach" then right click => attach then i go to the "
Disk manager" and here's the problem, when I right-click on it: all possibilities are greyed. Why? What could be the solution?

As a hint, I've been told there has something to do with Linux.
Any idea?