Macbook 4.1 (Early 2008) with Yosemite 10.10 (More in the comments) : r/mac
Macbook 4.1 (Early 2008) with Yosemite 10.10 (More in the comments) : r/mac,Got El Capitan to work on a Early 2008 MacBook 4.1 today. It's slow but manageable. : r/mac,Vintage Apple Mac MacBook 4.1 C2D A1181 White Laptop 4GB 160GB DVD-R OS 10.6.3 | eBay,Apple MacBook 4.1 Mac OS X 2,4GHz 2GB 160GB 2242 13,Installing Catalina on MacBook 4,1 with patch : r/macapps