I upgraded a Mac to OS X Yosemite and would like to find the age (when it's been released). In previous OS it was given here:

Details under Mac OS X Mavericks

but I can't find it in Yosemite there

Cant find age


  • According to the serial number it's a "MacBook Pro "Core i7" 2.66 15" Mid-2010". I assume you already tried to reboot. Is there anything of interest in /var/log/system.log around the time you access "About this Mac"? – nohillside Dec 30 '14 at 15:37
  • @patrix where do I find the /var index? – LinusGeffarth Dec 30 '14 at 15:38
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    Open Terminal and sudo less /var/log/system.log. Or run the Console application – nohillside Dec 30 '14 at 15:40
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    Yeah maybe it was randomly... – LinusGeffarth Dec 30 '14 at 16:00
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    Are you connected to the Network? I believe System Information contacts support-sp.apple.com to get that info and populate the About this Mac window. – tron_jones Dec 30 '14 at 17:25

It should be right under the the OS X Yosemite. Checked 3 different models and all showed in the same place.

enter image description here

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    Well it's not...see new pic in my question – LinusGeffarth Dec 30 '14 at 15:28
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    @Ummsekatze It might be a bug in 10.10 - can you open the app store and install updates until you are at 10.10.1 ? – bmike Dec 30 '14 at 15:45

Or, on the same window, you can go to the Support tab and click Specifications to get even more information.

About This Mac/Support

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You could also check for your device or any other device when you have the serial number at selfsolfe.apple.com

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