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I have a new Macbook Pro 2017 (No touch bar) that will not boot from an external USB-C SSD drive. I cloned a 2012 Macbook air using Carbon Copy Cloner onto the drive and I have confirmed that the drive will boot from the MB Air. The Air has the newest version of Sierra. (10.12.5)

I have a 2016 Macbook Pro w/Touch bar and it will also boot to that machine.

I have tried to bless the drive in recovery mode (That did not work)

I would like to clone the Air -> new MB Pro 2017

For a long term solution, I would like to be able to make bootable backups of the new machine.

EDIT: I was able to clone the new OS on the new Macbook 2017 and it will boot to that.

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  • Why do you want to clone the air to the MB Pro? Isn't it better to start with a clean install of Sierra on the MBP and then then migrate your data? Jul 8, 2017 at 20:53
  • @MorganRodgers I have always used Carbon Cloner - fast and easy. - Looks like I will try TM for new macs Jul 8, 2017 at 21:40

2 Answers 2

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There are hardware specific builds of the OS that sometimes will run on one computer and not on another (due to drivers that are needed for certain models, etc). So this means that your MB Air setup will likely not work to boot the new MBP.

See here for some info: https://support.apple.com/en-us/HT204319

For this reason, you want to transfer over your data using the Migration Assistant (you can do this between computers, or using a Time Machine backup).

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  • It is interesting that it runs on my 2016 Macbook Pro with 4 ports Jul 8, 2017 at 22:18
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I had the same problem, on the same model (2017 MBP, no touch bar). The solution that finally worked for me (after many tries at reformatting, resetting PRAM, etc.) was simply moving the USB drive to the other slot.

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