Problem with Boot Camp on Catalina

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Enforcer25 Author

Level 1

10 points

Problem with Boot Camp on Catalina

Hello.

My device is iMac 27" 2017, Mac OS Catalina.

I have installed Windows 10.

My steps:

Open Boot Camp utility and add Win 10 ISO file from Microsoft's site
After Win 10 starts run app with drivers

But after some times of starting of Win 10, Win 10 don't start.

Reboot 2-3 times while Win 10 is loading and then Win 10 wants to repair.

If I choose repair with all files deleted, win 10 starts correctly, but after some times the problem appears again.

Could you help me, please?

iMac 27" 5K, macOS 10.15

Posted on Nov 12, 2019 5:32 AM

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Answer 1

Loner T

Level 9

59,556 points

Nov 20, 2019 10:20 AM in response to Enforcer25

Can you disable Radeon updates after the Windows installation (https://support.microsoft.com/en-us/help/2500967/how-to-stop-windows-7-automatically-installing-drivers - valid on W8.1/W10) and test the original Bootcamp-provided driver.

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Answer 2

Loner T

Level 9

59,556 points

Nov 18, 2019 1:40 AM in response to Enforcer25

I recommend not installing the AMD driver from https://www.amd.com/ru/support/kb/release-notes/apple-boot-camp.

If your games do need the latest drivers, try bootcampdrivers.com.

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Answer 3

Loner T

Level 9

59,556 points

Nov 16, 2019 7:23 AM in response to Enforcer25

Enforcer25 wrote:

I have installed W10 1909.

Nice!

Besides, I plugged out one USB device. Maybe the problem was in that.

No external storage should be connected, so this is the likely issue.

In Mac OS - Startup Disk only Macintosh HD. There is no Windows. Is it normal? I thing Windows should be exist also.

If you reboot and hold Alt/Option, do you see a Windows selection? If yes, select it and boot. Once booted in Windows, post the output in an Admin CMD window, post the the output of

fsutil fsinfo ntfsinfo c:

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Answer 4

Loner T

Level 9

59,556 points

Nov 13, 2019 3:34 AM in response to Enforcer25

Enforcer25 wrote:

But after some times of starting of Win 10, Win 10 don't start.

Do you get an error during startup? Does Windows Safe Mode work?

Reboot 2-3 times while Win 10 is loading and then Win 10 wants to repair.

If I choose repair with all files deleted, win 10 starts correctly, but after some times the problem appears again.

After the initial install and Bootcamp driver installation completes, create a Windows System Restore. If the problem happens again, try to roll back to this Restore point.

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Answer 5

Loner T

Level 9

59,556 points

Nov 19, 2019 12:52 AM in response to Enforcer25

Check for any unknown devices in Windows Device Manager. You may need to enable 'Show Hidden Devices' in the View option.

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Answer 6

Enforcer25 Author

Level 1

10 points

Nov 16, 2019 1:10 AM in response to Loner T

I have installed W10 1909.

The result was the same. After W10 installed the first loading was failure.

But! I selected Repair - Delete all files. And it helped for me. So far so good.

Besides, I plugged out one USB device. Maybe the problem was in that.

And one more thing.

In Mac OS - Startup Disk only Macintosh HD. There is no Windows. Is it normal? I thing Windows should be exist also.

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Answer 7

Enforcer25 Author

Level 1

10 points

Nov 17, 2019 11:36 PM in response to Loner T

Windows is not loading again.

I have installed it one more time.

But didn't install apple soft after the first loading of Win.

Everything worked nice (just games is worked slowly), until I installed AMD driver!

After that Win isn't loading again.

So, the problem in Video Adapter driver.

Downloaded from here:

https://www.amd.com/ru/support/kb/release-notes/apple-boot-camp

Any idea how to solve that?

For example, download another one driver or what...

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Answer 8

Loner T

Level 9

59,556 points

Nov 14, 2019 7:54 AM in response to Enforcer25

There is a new W10 1909 (Nov 2019) that you can test with.

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Answer 9

Loner T

Level 9

59,556 points

Nov 21, 2019 5:07 AM in response to Enforcer25

Use BC Assistant -> Action -> Download and a USB2 Flash drive.

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Answer 10

Enforcer25 Author

Level 1

10 points

Nov 13, 2019 4:35 AM in response to Loner T

No any errors during startup. Just loading a lot of time, then reboot, then loading one more time, then reboot, then repair mode.

Safe mode didn't try.

For the system restore I need to load windows, but I can't when the problem appears.

I just don't understand why does the problem exist?

I think reinstall Mac OS will solve the problem. Maybe.

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Answer 11

Enforcer25 Author

Level 1

10 points

Nov 18, 2019 10:27 PM in response to Loner T

Which one of drivers should I download?

I have installed:

Win10-64Bit-Radeon-Software-Adrenalin-2019-BootCamp-Nov-Blue-Edition-A --- Windows is not loaded, the same problem.

64Bit-Adrenalin-19.11.1-W10-W8.1-W7-BootCamp-Legacy-Edition --- Nothing happend. Radeon 570 didn't appear in the device manager.

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Answer 12

Enforcer25 Author

Level 1

10 points

Nov 20, 2019 3:32 AM in response to Loner T

There are no any unknown devices in Windows Device Manager.

I have tried a lot of drivers from bootcampdrivers.com. No one helped me.

The problem is still actual: After I have installed graphic driver my Win10 is not loading.

Maybe my iMac is broken?

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Answer 13

Loner T

Level 9

59,556 points

Nov 20, 2019 5:55 AM in response to Enforcer25

Your iMac (Retina 5K, 27-inch, 2017) - Technical Specifications has three different GPUs.

Graphics

3.4GHz
Radeon Pro 570 with 4GB of VRAM
3.5GHz
Radeon Pro 575 with 4GB of VRAM
3.8GHz
Radeon Pro 580 with 8GB of VRAM

Which of the three GPUs do you have?

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Answer 14

Loner T

Level 9

59,556 points

Nov 14, 2019 3:29 AM in response to Enforcer25

What is the version of the W10 ISO?

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Answer 15

Enforcer25 Author

Level 1

10 points

Nov 14, 2019 4:32 AM in response to Loner T

Windows 10 1809 x64 nov2018

and

Windows 10 1903 x64 may2019

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Problem with Boot Camp on Catalina

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