I have an older dell optiplex desktop that I am trying to upgrade the mechanical hard drive to SSD. I've done this in the past many times but can't remember what free software I used. I've tried easeus, macrium, and 1 more I can't recall. The old hdd is 500 gb and the new is only 120 gb. I've formated the new drive so it is empty. I am using a usb to sata cable to connect the ssd. Can't get it to copy. There is only 40gb used on the 500 gb hdd. Not sure what else to other than buy a larger drive.