"Windows cannot locate the disk and partition specified"

I got the exact same Windows 10 install error about <ImageInstall> on a late 2016 MacBook Pro with Touchbar. I had the exact same error screen as the original poster posted to imager below.

But I found a much easier fix than pointed out later/elsewhere:

- After the Windows 10 install error, Mac automatically boots back to OS X.
- TIP 1: Unplug the USB Stick or USB Hard disk you were possibly using to hold the Windows 10 ISO image. It is possible that this has been the issue all the time, that Windows or Bootcamp get confused about too many disks being attached. So remove the disk or stick.
- Now Reboot the Mac by yourself.
- TIP 2: While Mac reboots, HOLD DOWN the ALT -key. This opens up an operating system / disk menu, from where you can select WINDOWS instead of pre-selected macOS. Use arrow keys and enter to select. Trackpad/mouse wasn't working at all for me.
– Your Mac now continues to reboot back to the Windows installation process. Turns out that this time the Windows install doesn't get confused about disks (or something), and installation goes like a breeze after that.

No need for any of that quite technical "GPT fdisk" stuff.

The <ImageInstall> error is related to AutoUnattend.xml being a template, not the file that would otherwise be created by BC Assistant. The fix to show the disks/partitions is documented in Bootcamp install windows to black screen .

This worked for me the first time I tried installing windows however still had boot issues from time to time eventually the windows crashed and would only boot to an backup screen. I don't think what you suggest is a long term solution to this problem.

I think you're right. I got this error and took your suggestion. I had 3 external hard drives plugged in. Disconnected them all, rebooted and the install went through without another issue.

Thanks!

Do you have a screen shot of the exact error message? Do you have any external storage connected to the Mac when you try to install Windows?

Please see Bootcamp install windows to black screen .

Logged in specifically to say thanks! You were absolutely right. I had an external drive plugged in and as soon as I used Bootcamped after ejecting it, the install went perfectly. :)

Thank you!