I recently upgraded the software in my Apple Mac Mini. I didn’t need to change the system. I just did it because I found a cheap copy of Leopard on Ebay. I purchased Leopard for $68.00, including shipping to my Florida mail forwarding address. Then it cost $9.50 to get it to Airbox Express in David. Since the software costs $129 plus tax from Apple, I saved a fair amount of money.
The Apple OS is a good system. The only problem with Apple, in my opinion, is its overpriced hardware. The arrogance of Apple, coupled with poor quality of Microsoft’s systems continue to make me impressed with the Linux alternatives.