Unable to upgrade iMac to Snow Leopard I am unable to upgrade my iMac to Snow Leopard even though it seems to meet all the requirements. The iMac has:


Intel Core 2 Duo processor
DVD drive
4GB RAM
185GB of storage available.


When I try to install, it simply says "Mac OS X Snow Leopard cannot be installed on this computer."
I got a different disc and it worked. Apparently, the disc I originally tried was only to be used on the computer it came with.