Boot Camp assistant does not recognize Windows 10 ISO file "CCCOMA_X64FRE_EN-US_DV9" as 64 bit, any other source for the necessary ISO file?

Boot Camp assistant does not recognize Windows 10 ISO file "CCCOMA_X64FRE_EN-US_DV9" as 64 bit, any other source for the necessary ISO file or way to get the assistant to recognize file as 64 bit?

Posted on Aug 22, 2020 11:47 PM

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Posted on Aug 25, 2020 9:05 PM

Thank you once again Loner T for your time and help. Eventually discovered that I was double-clicking the file in the download window which was opening the disc image rather than just dragging the file from the download window to the desktop. All worked as designed afterwards.

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Aug 25, 2020 9:05 PM in response to Loner T

Thank you once again Loner T for your time and help. Eventually discovered that I was double-clicking the file in the download window which was opening the disc image rather than just dragging the file from the download window to the desktop. All worked as designed afterwards.

Aug 24, 2020 8:33 AM in response to GNTLMN

GNTLMN wrote:

I apologize Loner T,

When the file is downloaded it creates a disc image named: CCCOMA_X64FRE_EN-US_DV9.

It should not be automatically mounted, till BCA asks for the location.

What is automatically loaded into the ISO image box by the Assistant is: /Users/username/Downloads/Win10_2004_English_x64.iso.download/Win10_2004_English_x64.iso.

This indicates an incomplete/partially completed download. If the download completed successfully, you should have


/Users/username/Downloads/Win10_2004_English_x64.iso.


Aug 23, 2020 12:51 PM in response to Loner T

The file was downloaded from Microsoft as the link in the Boot Camp Assistant does take you directly there and the file was downloaded twice and shows up in the window to choose the ISO. I set the partition parameters and click install and that's when I am told to select a 64 bit ISO. Not sure how to check the MD5sum even though I did see the chart for the various languages.


Appreciate your help Loner T.

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Boot Camp assistant does not recognize Windows 10 ISO file "CCCOMA_X64FRE_EN-US_DV9" as 64 bit, any other source for the necessary ISO file?

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