Hi, I want to scan something to post but the scanner is connected to another computer in the house. If I scan using that, I will obviously have to delete the picture after transferring it to usb drive etc. Does anyone know if it will save like a backup copy or something somewhere I can't or won't find?

It depends on your scanner software I suppose. My scanner (which I haven't used in years) saved the pic in only one place. Of course, you must remember to permanently delete the image from your Recycle Bin as well.

Maybe the scanner software have a 'settings' or 'preferences' where you can set the destination directory of the images, so you'll know where they are.