operating system

Joined
Oct 28, 2011
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Location
santa fe, new mexico
Your Mac's Specs
I don't know?
how do i know what operating system is running on this mac?:Confused:
 

bobtomay

,
Retired Staff
Joined
Dec 22, 2006
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Location
Texas, where else?
Your Mac's Specs
15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
Click the apple - top left corner - About This Mac

Just under the big OS X, it will have either the Version, Build or Serial # - click that to get it to change between the 3 of them.
 

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