What does DCP watchdog violation mean?

Giron/Kiruna wrote:

My Bootcamp shows

– Create an installation disk för Windows 10 or later

– Fetch the latest Windows support app from Apple

– Erase Windows 10 or later

This indicates that there is a partial or incomplete Windows installation.

This makes me think. Why is my Bootcamp 100 GB partition empty?

The installation failed. Re-run BC Assistant, and click on Erase, which should put the 100GB disk space back in Macintosh HD. Then you can run the two resets, connect yoru USB, and select Install option only.

By the way, I have saved WindowsSupport on my hard disk. It is the same as on the Wininstall USB.

Good.

Giron/Kiruna wrote:

The Aura X2 is the SSD hard disk.

The SSD is connected to the Logic Board as shown in Early 2014 SSD. If you use a third-party adapter to connect it to the Logic Board, it can cause issues.

By the way, I restarted again with the option key. There were two Windows. No-one made Windows start. This makes me wonder, if Windows try to start from one of the Wininstall USBs. Now i have ejected both, and the partition with a full Windows in, is still there.

The Windows installer starts from the exFAT USB, copies files to the internal disk, and then tries to boot from the internal disk. At this point it can generate an error as you mention

When everything was as it should, I got a message, that something was wrong, and that I needed to restart.

This error can be a failure to update the boot configuration of the internal disk. At this point your internal disk has all the files the OS needs, but it is unable to boot. If you disconnect the USB (FAT and exFAT, both), and reboot and hold Alt/Option, do you see a Windows selection? If yes, select it and check if Windows will try to boot.

If Windows is not fully installed, then

• Disconnect all external peripherals
• Remove Windows from your Mac using Boot Camp - Apple Support
• Run
  • Reset SMC - How to reset the SMC of your Mac - Apple Support
  • Reset NVRAM - Reset NVRAM or PRAM on your Mac - Apple Support
• Run BC Assistant You can either choose
  • Create+Download - which will only create the Installer, or,
  • Create+Download and Install - which will create the Installer on the USB2 flash drive and partition and try to install Windows
• Connect a USB2 Flash drive of 16GB, if Bootcamp wants to create the installer
• Try to install Windows

• Remove Windows from your Mac using Boot Camp - Apple Support
• Reset SMC and NVRAM
• Connect your USB Installer
• Run BC Assistant, and choose only the Install option. Do not select Create or Download. This will stop BC Assistant from creating the USB installer again.
• Try to install Windows.

Can you disconnect all external storage and test if you still get a Stop Code violation?

Post back when you can.

The 16GB USB is your installer. If you are in macOS, run BC Assistant and Remove Windows from your Mac using Boot Camp - Apple Support. Once you have disk space back, connect the USB, and choose only the Install option, which should partition and try to bring up the Windows installer.

Also, what is the current macOS version?

Your USB looks fine. Once you have built it, you do not need to use Create and Download again. If you reset SMC and NVRAM, connect your USB and choose only Install option, does the Windows installer start?

Giron/Kiruna wrote:

I don't think so, but I can try again. But which Windows 10 will it erase? There is only one, the one on the USB. That spooky CCCOMA_X64FRE_SV-SE_DV9 is gone.

This is the W10 ISO image. It was ejected. If necessary, BCA will mount it again.

Talking of the USB. It was installed on my ExFAT USB 16 GB. I had til now another, Fat32, Wininstall since the first time I installed Bootcamp years ago. I had thought it should be spared, therefore I still have it. If I insert it, it looks like the new USB Wininstall but perhaps without upgrades during the years.

ISOs older than W10 1903 would fit on a FAT USB. W10 1903 and newer ISOs have a single file which is larger than 4GB, which no longer works with FAT. In macOS Mojave 10.14.5, the USB format was changed to exFAT.

Shall I prefer one of them?

If it uses an older W10 ISO, you can try it. It is very unlikely that the result will change. Your DPC violation is related to the Aura X2. Do you still have the original Apple SSD for this MacBook Air?

There are a few logs that we can review. These should be on your internal disk. When booted in macOS, look at Bootcampp -> Windows -> Panther.

It can be a large file. It can also contain personal information. You do not need to post it here, but you can check the file for any errors.

Click on Applications -> Utilities -> Terminal, type diskutil list in the window, and press Enter/Return. You can then post a screen shot or copt/paste the output..

See https://docs.microsoft.com/en-us/windows-hardware/drivers/debugger/bug-check-0x133-dpc-watchdog-violation for a detailed explanation.

W10 Pro vs Home is not an issue. Has any hardware been replaced on this Mac? Are there any external devices connected to the Mac?

Giron/Kiruna wrote:

I do hope you got my file via e-mail.

I have not had a chance to look at it yet, but I will.

Since then:

I told my problem for the manufacturer of the SSD and got this answer:

This is what I suspected and the https://eshop.macsales.com/Service/Knowledgebase/Article/12/776/Aura-Pro-X2-SSDs-Boot-Camp-Compatibility link has the same information.

If you can find a used Apple SSD of the size you want for your specific model, it may be an option to consider. The other option is to use a Virtualization Engine for installing Windows, instead of Bootcamp.

Let us check the USB first. Connect the USB and in macOS Finder, take a screen shot of the files at the root of the USB device. Let me post a screenshot from what I have.

You can post the file to pastebin.com and post a link to it here.