I have Yosemite and Mountain Lion on the same MacBook Pro on different partitions to dual boot . Does anyone now of a program that is available to stop me shutting down when I go from Yosemite to Mountain Lion, without shutdown
I can but I just wondered if there was a program that did it similar to the program boot champ that avoids going to the different part ions to choose .
Not exactly, but it sounds like what you want to do is go to System Preferences > Startup Disk
That still requires a restart, but at least you can do the drive selection first and then go get a snack while it's restarting instead of sitting around holding the option key.