easeus

Evening All! I would like to ask for some help relating to a cloning issue, which is doing my head in! But first, some short background: I have a 12-year old Dell OptiPlex 990 SFF, purchased in 2011. Apart from a couple of years spent in storage, the machine has been left running literally 24/7...

I recently used Rufus software to download W7 to a USB stick but during my attempts rufus chose my still connected external hard disk for formatting (I think?) and downloading to. I noticed that just as it was starting the procedure and stopped it. Have n´t a clue why it chose the Hard disk...