So we currently have an image for our macs that is 10.6 and we have recently purchased some replacement machines which came with 10.7. When I try to go into netboot I get the Mac logo with the small spinning globe which then disappears and it just sits there. Will this just not work because it has 10.7?
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The computer you're trying to image came with 10.7, so it will not boot with anything other than that version of the OS or greater (10.7.+). This would include net install or booting off a disk. If you managed to get the image on the HDD somehow (HDD cloning) it still would not boot.

We've ran into this several times in the past. I have yet to find a way to "downgrade" the OS on a Mac from what it shipped with.
Answered 10/19/2011 by: JesseLara
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Wish I knew that before the hardware was purchased. Thanks.
Answered 10/19/2011 by: pmcgit
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If you create a Lion net boot set, and the image you're deploying is Snow Leopard, the machine will not boot from it afterwards. Macs can only boot with the OS they shipped with or greater.
Answered 10/20/2011 by: JesseLara
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Apple always does this and it is so, so very annoying!

That being said, we have been able to load 10.6 on a "Thunderbolt" MacBook Pro that came with 10.7 because of some lucky circumstances.

1. We had a 10.6.6 system DVD that came with one of the first Thunderbolt Macs. We were able to create a netboot image with this CD that started up all of our Thunderbolt MacBook Pro laptops.If you don't have this system 10.6 DVD, then you are out of luck.
2. We then loaded our image of 10.6 via the KBOX on to the new MacBook Pro that shipped with 10.7 Lion.
3. When the image completed, we remained in the netboot environment and applied the 10.6.8 combo update to the MacBook Pro. You must use the "Combo" update for this.
4. We then rebooted and the system loaded with 10.6.8 and was functioning properly.

Of course, I hear new MacBook Pros are coming out next week. If that is true, these new ones will be hardware-tied to 10.7 and there will be no downgrading to 10.6.

-André
Answered 10/21/2011 by: asanchez
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