Bootcamp not booting in Big Sur using Macbook Pro Late 2014

Correct. Selecting windows just boots mac os and get's frozen on login requiring a hard reset. To be exact, selecting EFI boots starts the window installer and then let's you chose the bootcamp windows partition to download windows to.

I forgot to mention, I have a mid 2014 retina MacBook pro.

George_eng wrote:

Correct. Selecting windows just boots mac os and get's frozen on login requiring a hard reset.

You do not yet have a Windows installation on the internal disk at this stage, but just an empty partition that is called Windows.

To be exact, selecting EFI boots starts the window installer and then let's you chose the bootcamp windows partition to download windows to.

Your are booting the Windows installer from the USB, not from the internal disk. This is normal behavior for a 2014 Mac.

The discussion is related to an already existing Windows installation which does not boot correctly on a 2014 Mac, running Big Sur.

I do not have 3 disks shown on my configuration. i am already working with an existing bootcamp partition with windows on it, from before Big Sur. I have 2 disks when I hold option during start (EFI and macOS).

I used to have 3 disks, some time around or prior to Catalina I believe ... i may be mistaken around when that went away ... i didn't keep track of which macOS version that change from 3 disks --> 2 disks occurred.

even though i am now on 11.2.1, the double-boot issue IS still present -- but -- and this is interesting .... windows will boot twice ONLY when I am coming from macOS. when restarting or shutting down macOS, a boot into windows will repeat itself once before i am able to log into windows. Startup flag being set to Windows and I am not touching the option key after the chime.

IF I am in windows, a reboot or restart from windows does not repeat. a single startup/boot gets me in.

not sure if that observation helps any with trying to pinpoint or visualize the problem better, but it is indeed what is happening on my side and I made sure to leave the volume on so I could hear and count the reboot chimes.

I can't boot into windows 10 since I upgraded to Big Sur. The chime is heard at startup but the screen stays black for fifteen to twenty seconds. then re-starts in OSX. Once it flashed the Windows logo quickly the went black and again restarted in OSX. I have tried starting through preferences, start up disk also by restart holding down the option key and same thing. I have a late 2013 MacBook Pro. I installed bootcamp after I purchased the computer new and it has always operated flawlessly until the Big Sur upgrade. I'm hoping there is a fix if not some advice on how to downgrade to Catalina without causing more problems. Thanks

DJMac317 wrote:

• 3 disks appeared on the boot screen. Choosing "Windows' doesn't do anything, you have to choose "EFI Boot". This will boot from the USB key.

The internal Windows partition should be empty as it is the target of the installer, unless Windows is already fully installed. A 2014 Mac supports both the legacy BIOS and newer UEFI mode of installation of Windows. If your installer USB is not a USB2 Flash drive, BIOS mode will not work, but only the EFI Boot will work.

Hi there,

I'm having the same issue. Before upgrading to BigSur I was able to boot windows 10 on an external SSD. I was considering to downgrade to Catalina, but as I've read your experience that doesn't seem to be the solution.

I have tried your solution before but at that time it didn't work. It tried booting into Windows but then it just came straight back to MacOS.

GregStonecastle wrote:

Hi there,

Before upgrading to BigSur I was able to boot windows 10 on an external SSD.

What was the macOS version before you chose to upgrade to Big Sur?

I was considering to downgrade to Catalina, but as I've read your experience that doesn't seem to be the solution.

Unless you must have Big Sur features, I do not recommend it (yet!).

I have tried your solution before but at that time it didn't work. It tried booting into Windows but then it just came straight back to MacOS.

You may want to try using the Alt/Option key and repeat booting into Windows more than once.

I’m trying to enter my password on Windows 10 which is on the Mac Big Sur ? When I booted the windows earlier in the day it did a update ! I can get on to Windows now but it will not take the password . The keyboard seems to be stuck !

How can I do this? I can see my Windows files after the machines restarts in Big Sur.

I am having this same issue...help?

No mine is a spring 2017 retina pro. I just posted my solution in case it helps

sbisas wrote:

No mine is a spring 2017 retina pro. I just posted my solution in case it helps

👏 Thanks!

Thanks, that works!

I just installed the Big Sur OS . Previously

I had installed Catalina.

unable to enter my computer.

how can I get into my Mac computer???

Did all the suggested changes, still need to select at startup the windows partition, otherwise startup freezes.