Mario, the piece of drywall was carefully screwed to the piece of board so there would be a perfectly cut patch for the hole.
Yup, found it:
PHSJason said
Now, remove the board WITH the sheetrock attached to the back of it. You may have to pull a screw or two through. This will keep the long, thin piece from breaking, or coming apart at the seams. Set the board and sheetrock aside. Remove any screws that protrude from the studs.
Drill the studs, run your wires. Using a pencil, mark the stud locations on the sheetrock above and below the cut(or the sides on a ceiling).
Re-install the sheetrock that you removed, using the marked stud locations. You should have room around the edge of the board to cleanly screw down the removed piece where the screws will be covered by tape. Remove the board from the sheetrock and tape/texture away.
