How do I update my OS on 2007 iMac "Core 2 Duo"
I have a 2007 iMac "Core 2 Duo" 2.0 20-Inch. How can I upgrade the OS? The High Sierra update tells me that my iMac OS cannot be updated to High Sierra.... ?
iMac, OS X Yosemite (10.10.5), ram has been upgraded to 4gb