Distributing your OS digitally certainly makes for an easy upgrade, but what happens when your hard disk spontaneously combusts -- taking Lion's recovery partition with it? Unless you planned ahead and rolled your own install image, you were stuck taking an arduous and painful detour back to Snow Leopard before being given the chance to re-up with Cupertino's latest. That changes today, with the Lion Recovery Disk Assistant, a utility that duplicates the OS's recovery partition onto an external drive of your choosi
