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Can a new mac be loaded with old operating system?

We just purchased a new mac air book for our office. All of the other computers in our office use the OS X 10.7.3 operating system. The new computer uses OS X 10.8.2. Are we able to load the old operating system onto the new computer so that all of our computers match and will not have communication issues in the future?

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In the past no Mac would even boot from a system lessor than what it shipped with. But the difference is the two systems is very negligible.

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As long as you don't have a Retina display model. A retina displayed model may look a like funky as the resources it needs is in the newer OS, it still should work.


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create 2 partitions on the same HDD (hard drive)

Block Image

amy and kim are an example ! (the first partition (amy's part ) is used with the osx 10.8)

the second partition (virgin partition) where you have to install the old operating system 10.7 !

how to do that ?

go to this menu

Block Image

select start( demarrage)

Block Image

and select the optical drive (with osx10.7 installation)

and select reboot !

when your device reboot select the virgin partition !!! for install the osx 10.7 !!

problem solved

enjoy ;)

ps: part = partition

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Douglas Murphy will be eternally grateful.
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