After booting up, open Disk Utility and do a First Aid.

Reboot the machine, do a PRAM reset (Press option + cmd + P + R while startup).

After installation (this will take some time) and minimal setup, download 64-bit Windows 10 iso from Microsoft website ( ).

Close the utility and go back to the starting screen and select 'Reinstall MacOS'.

(Warning: You will loose all data in your machine)

Erase the drive using default options.

Connect to internet, select Disk Utility and select Macintosh HD.

Reboot machine and go to 'Internet Recovery Mode' (Press option + cmd + R while startup).

Below are the steps that worked for me, in the exact order.

While searching for a solution, I read (here: ) that one way to fix this issue is to reinstall MacOS. This was not going away, no matter how many times I did First Aid. 'Warning: crypto: val object (oil:0x04): invalid state'. However, while doing First Aid on Macintosh HD using Disk Utility, I noticed that I was getting the following error: I faced the same problem on my new 2018 15 inch MacBook Pro. I think that's the most I've ever identified with a tennis ball. Apple couldn't pass me off to Microsoft quick enough and Microsoft couldn't pass me back to Apple quick enough. So, what's the trick? How did other MacPro6,1 users get Boot Camp paved? Is this a firmware update I'm going to need to wait for? Windows finishes the installation, seemingly, but it just doesn't seem to be able to update the boot data. All lead to the same error after rebooting to the USB drive and commencing with Windows setup. I've tried letting the Boot Camp Assistant do everything, I've also followed the advice in several posts that suggest interrupting the process by booting back into Mac and using Disk Utility to format the Boot Camp partition as FAT, ExFAT, etc. Windows could not update the computer's boot configuration. (Can't try Windows 7, obviously.)Īll three give me this at the end of setup: I have tried Windows 8.1 Pro, Windows 8.1 Enterprise, and Windows Server 2012 R2.

I am stuck with a Boot Camp installation on a new Mac Pro.

How to set up bootcamp on a mac