If I have Snow Leopard and Yosemite on separate partitions and then restart the computer, how does it know which OS I want to use?
What happened is this: Snow Leopard will not run this year's Turbo-tax so I need the newer OS system but I prefer Snow Leopard for most purposes. Not sure what problems I might be introducing if I download Yosemite onto a separate partition. I haven't needed to partition before.
Model Name: MacBook Pro
Model Identifier: MacBookPro5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.93 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 6 MB
Memory: 4 GB
02-07-2015 02:59 PM