Photoshop :: Can't Rotate The Canvas

I'm using PSCS and I can't get the entire canvas to rotate 90 degrees or flip vertically or horizontally (see attached screen shot). In fact Edit>Transform is dimmed unless I Select All, but then I lose part of the image unless I stop, make a bigger canvas, select all, rotate and deselect. Another workaround is, I can make the background layer into an O layer and then I can flip and rotate, but again,only the image moves, not the canvas. I used to be able to do it but not since I re-installed PSCS.