How to tell what version a Snow Leopard DVD is?

I have a Snow Leopard DVD that was copied from the original. All it says on the CD is "Snow Leopard" How can I tell what version of the DVD it is? The DVDs were only released in versions 10.6.0 and 10.6.3.

Solution 1:

You should be able to see the OS version by going to System Preferences > Startup Disk. If it doesn't show in Startup Disk for some reason, you can run the following command in Terminal:

defaults read "/Volumes/Mac OS X Install DVD/System/Library/CoreServices/SystemVersion" ProductVersion

If your DVD is not called "Mac OS X Install DVD" then you'll need to replace that part of the command with the actual disc name.