At last it worked. Is it as easy as that just log out and then log in to the other one? Paul Moortgat On 10 Feb 2010, at 23:17, zapcat wrote: > > On Feb 10, 2010, at 2:13 PM, Paul Moortgat wrote: > >> Will it give problems to have more than one OS in the same Mac? >> >> Paul Moortgat > > > Not in my experience. Simply partition your boot drive to have as > many partitions as you need, and install one version of OS X to each > partition. > > I have one for Leopard, one for Snow Leopard. They don't interfere > with each other at all. As you know, if you are in one version of OS > X and want to be in the other, you will have to log out on and log > into the other, but that's no big effort. > > > zc