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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.

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Are you asking just out of curiosity or is their a specific reason behind it? –  patrix Feb 17 '12 at 19:57
    
@patrix I'm making a NetInstall image of it for a Netboot server and want to make sure I have 10.6.3 and not 10.6.0. –  Matt Love Feb 17 '12 at 20:01
    
I have a 10.6.2 here, came together with the late 2009 iMac. –  patrix Feb 17 '12 at 20:13
    
Yeah, that's an special build for your iMac. The DVDs I'm talking about are the reference releases sold by Apple in stores. –  Matt Love Feb 17 '12 at 20:16
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up vote 6 down vote accepted

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.

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Thanks! Don't know why I didn't think of that. –  Matt Love Feb 17 '12 at 20:16
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