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I can't confirm, but if it's like every other Mac in recent history, no. It will only boot the version and build it originally shipped with or higher until the point Apple drops OS support for it a few years down the road.
 
The new mbps looks almost the same with the old ones but inside they have completely new components and chipset, so 10.6.8 is missing the necessary drivers and core updates.

I hope this helps...
Fil
 
I can't confirm, but if it's like every other Mac in recent history, no. It will only boot the version and build it originally shipped with or higher until the point Apple drops OS support for it a few years down the road.
The 2011 MacBook Pros shipped with 10.7 but they could be reimaged and boot 10.6.8. It looks like it can't anymore.

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The new mbps looks almost the same with the old ones but inside they have completely new components and chipset, so 10.6.8 is missing the necessary drivers and core updates.

I hope this helps...
Fil
Thanks I just wanted to confirm. We ordered a new Macbook Pro for someone who requires 10.6.8 and the new MacBook Pro can't run it.

It looks like I may have to give them my 1 year old MacBook Pro and keep the new one for myself since they require 10.6.8. :D
 
The 2011 MacBook Pros shipped with 10.7 but they could be reimaged and boot 10.6.8. It looks like it can't anymore.

The early 2011 Macbook Pros shipped with 10.6.7. The late 2011 could run Snow Leopard, but it was a bit glitchy.
 
The 2011 MacBook Pros shipped with 10.7 but they could be reimaged and boot 10.6.8. It looks like it can't anymore.



Yes, but that is because the early 2011originally did ship with 10.6 and the late 2011 is just a speed bump of the early version.
 
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