Snowleo Mac: Snow Leopard Osx86-64 For Intel Amd...

It sounds like you’re looking at a disk image (likely a modified version of OS X 10.6 Snow Leopard) meant to run on non-Apple PCs with both Intel and AMD processors.

Here’s a general review based on what such releases were like back then (circa 2009–2012): SNOWLEO MAC Snow Leopard OSX86-64 For INTEL AMD...