I downloaded this zip file from this forum.
Clicking on the icon unzipped it to reveal a .bat file.
RC on this icon revaled a very brief menu; I clicked on Open, expecting it to open in Notepad so I could see the batch code.
Instead it executed immediately and wiped SW.
The batch file opened for editing on a different box, so I now know what is in it.
A Pause statement in the batch code would have prevented the disaster.