Bootcamp not booting in Big Sur using Macbook Pro Late 2014

Just installed Big Sur on late 2014 MacBook Pro 15 yesterday. I've used Bootcamp for my windows partition for years and never had an issue until this OS update and I'm trying to resolve. Bootcamp is supported on Intel Macs using Big Sur OS, but I cannot boot from the drive with this update - either via System Preferences selection or manual startup using the Option key during boot. The Mac chimes 2-3 times, but never boots into Windows, instead going back to the Mac partition. Hopefully this is a software quirk that will get quickly resolved.

MacBook Pro 15″, macOS 11.0

Posted on Nov 13, 2020 9:54 AM

Top-ranking reply

George_eng

Level 1

4 points

Posted on Feb 7, 2021 9:30 AM

Hello everyone!

I just went some trouble with my bootcamp. Let me explain what happened (to see if you have the same problem) and what I did to fix it!

I installed my windows iso on my desktop, then using bootcamp I made the my USB into the windows installer (all is well). I did went and partitioned my drive to the size I wanted (all is well), but when the computer restarted, it went straight to mac. Just like nothing had happened. I then restarted the computer and held the "alt/option" button during restart, I saw the windows partition, selected it, and then it went to mac and my computer froze so I had to force shut it down.

Solution to my problem...

When I booted up my mac, I helped the command, option/alt, P, R keys all together, which is called a reset to PRAM. Hold these buttons for 20 seconds, and you will see your mac restart a few times. After I let go of these keys, I then proceed to hold the option/alt keys, and now there's a 3rd disk that appears that I can use to named EFI boot. Select on it, and you'll finally see steps to download windows!

From there, everything went smoothly!

Best of luck to all :)

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Bootcamp not booting in Big Sur using Macbook Pro Late 2014

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