Disk Utility after upgrading to Lion
I couldn't get disk utility app to work from the Finder. I finally figured out to go to the "About This Mac" menu, upper left apple emblem, then clicked More Info.. then Storage then Disk Utility at the bottom right. Then I was able to set up my back up external HD for Timemachine. Took HOURS to figure this out. Hope this saves someone a lot of time.
texastreeman
MacBook, Mac OS X (10.6.3), added 500 GB hardrive, 4 GB RAM