i bought a new macbook pro with mountain lion preinstalled and i dont know how to put it on my older 10.6.8 Imac. There is no file for it on the macbook and says i havent bought it in the app store.
You can only share it if you bought it from the App Store. Pre-installed versions are single-copy licenses:
A. Preinstalled and Single-Copy Apple Software License. Subject to the terms and conditions of this License, unless you obtained the Apple Software from the Mac App Store or under a volume license, maintenance or other written agreement from Apple, you are granted a limited, non- exclusive license to install, use and run one (1) copy of the Apple Software on a single Apple- branded computer at any one time. For example, these single-copy license terms apply to you if you obtained the Apple Software preinstalled on Apple-branded hardware.