[One of a series regarding Snow Leopard’s new Finder menu commands.]
Another addition to the Go menu, which shows up when you press Shift, is Select Startup Disk on Desktop. At first I was practically thrilled about this—until I realized I had misread its intent: I thought it meant you could select a disk/volume on the Desktop and make it the startup volume—a procedure otherwise necessitating a trip to System Preferences.
But, noooo… All this does is, literally, select the startup disk on your Desktop: if you have more than one volume with an OS on it, and you don’t remember which one is running the show (which one you started up with), choosing this command selects the icon of the startup disk. Big deal. (Did the sarcasm come through?)