Windows 10 Bootcamp on mid 2012 MacBook Pro

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Level 1

8 points

Windows 10 Bootcamp on mid 2012 MacBook Pro

Over the past few days I have been attempting to partition my 2012 MacBook pro to be able to run Windows 10 in combination with the macOS High Sierra. I used bootcamp to partition the disk, however had to manually create a bootable USB drive as I ran into a frequently reported road block of not being able to get the iso file across to the usb.

Fast forwards and I was able to install Windows 10, although I now am having audio issues which have also been frequently reported, and in Device Manager there is an alert next to the High Definition Audio Controller.

Whilst some sites suggest trying to download various driver updates, another post on this site may have partially explained the issue:

https://discussions.apple.com/thread/8092766?page=1

In this thread it is noted that running Windows 10 wth a BIOS mode UEFI makes this impossible to fix, hence I am wondering if anyone can confirm this, and if that is the case, how do I go about redoing this process to successfully complete this process?

(Another thread also makes mention of this issue with UEFI: https://discussions.apple.com/thread/7938305)

MacBook Pro 13″, macOS 10.13

Posted on Jul 15, 2020 9:20 PM

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Answer 1

CAH8 Author

Level 1

8 points

Jul 19, 2020 8:14 PM in response to Loner T

BIOS isn't legacy, so that will be the issue. Given I am trying to run Mac OS High Sierra on the other partition, is there a way I can start the process again and get BIOS mode to run legacy without affecting the Mac partition?

I was unable to use BCA to create the bootable USB and had to do this manually as there was an issue getting the iso file across to the usb which has been reported elsewhere on this site.

Thanks for your help.

This is the instructions I followed to create the bootable USB:

https://www.freecodecamp.org/news/how-make-a-windows-10-usb-using-your-mac-build-a-bootable-iso-from-your-macs-terminal/

I was unable to complete step 4 using the GPT command, instead I had to use the MBR command which may also have contributed to the problems I faced down the line

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Answer 2

Loner T

Level 9

59,513 points

Jul 25, 2020 6:48 PM in response to CAH8

The USB Installer should be able to boot into EFI or BIOS mode, and you can check by connecting the USB and rebooting and hold Alt/Option. If you see a Windows icon on the external USB, it should work. Some USB flash drives have issues with bootability, so a reputable USB2 flash drive is recommended.

You will also need to ensure that the target disk has a hybrid MBR. GPT Fdisk can be used to create (and destroy one), as necessary.

If both conditions are satisfied, you should be able to install Windows in legacy BIOS mode.

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Answer 3

CAH8 Author

Level 1

8 points

Jul 28, 2020 5:02 PM in response to Loner T

I have now got it working with no issues at all. Thanks for your assistance, the key was as you said that the bootable usb was created manually rather than through BCA. To get around the High Sierra issue of not being able to get the iso onto the usb, I used another computer (2014 Macbook Air not that I think it matters) to create the bootable usb (ie. just the first of the three options on BCA).

I then plugged that in to my Pro, and only asked it to do the other two options (downoad support software and partition the disk) and it worked perfectly.

Thanks again for your asssistance

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Answer 4

Loner T

Level 9

59,513 points

Jul 18, 2020 8:29 AM in response to CAH8

Your 2012 Mac needs a BIOS installation. Run msinfo32 and check BIOS mode, which should be legacy. If you used a USB not created by BC Assistant, and manually select EFI boot, it will cause issues.

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Answer 5

Loner T

Level 9

59,513 points

Jul 30, 2020 2:03 PM in response to CAH8

Excellent!

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Windows 10 Bootcamp on mid 2012 MacBook Pro

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