Where are hard disks normally found?

The hard disk or "hard drive" is inside the computer, usually in the front. It is a rectangular object 4" wide, by 5 3/4" long, by 1" thick. It will be mounted to the "case" by 4 screws. It will have two cables attached to the back of it... on older computers, one of the cables will be flat, and wide ("ribbon cable"). On newer computers both cables will be about the same size.
Look for the soft one instead...