I am using a Mac Mini (having a light white logo – an older Mac Mini model). It is using Leopard 10.5.8. I want to upgrade to 10.6.8.
I want to check is it possible to install? If it is possible, then I will start downloading the combo upgrade.
Snow Leopard needs a …
Additional requirements are 1GB of RAM and a DVD drive. More than 1GB of RAM would be preferred though (from my personal experience). See also Snow Leopard's installation instructions.
This means, Snow Leopard does not run on pre-February 2006 Mac minis and runs on any newer products, yet with restrictions (see above). You can check the specific Intel-based models here.
So, you need to know your specific model number or the processor type. Check your processor by clicking the logo in the top left menu bar, and then "About this Mac". You'll find your processor name and speed there.