How do you run the Windows 10 iso?

I download Windows 10 Pro iso.  Burned it to DVD with Nero.  When I click on it I get "Virtual hard disk files can't be mounted from image files"

How do I use this iso?
J.R. SitmanIT DirectorAsked:
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JohnBusiness Consultant (Owner)Commented:
You start with a working Windows 7 or 8 operating system.  Go to this Microsoft Windows 10 site

select the download 32 or 64 bit and then select RUN (no need to download it). This will start the upgrade process. I have used this link several times.
If it's still referring to an image file, it's sounds as though you simply copied the ISO onto the disk and burnt it that way. What you need to do is go into Nero Burning Rom and either select the option for "DVD-ROM(ISO)" and follow the instructions from there, or simply click on the "Recorder" tab at the top and select "Burn Image" - this will also guide you through the process.
If you're still having this issue, then it sounds like your ISO file might have suffered corruption during the download.

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In win8.x, double click the ISO, it will mount automatically and show up as a drive, just as if you inserted a DVD.
In win7, we cannot mount Iso files without external tools. So you would either use Nero like already described, the menu"recorder" is it. Or extract the ISO using 7zip and then start setup.
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J.R. SitmanIT DirectorAuthor Commented:
I'm upgrading a Windows 10 home version to Pro.

I tried the NERO burn to iso, but it said the file was to large.  I'll try again.
JohnBusiness Consultant (Owner)Commented:
You have to start with a base Windows 7 or 8 system that is PRO.  If not, then upgrade to Windows 10 Home and then upgrade to PRO after. If you use the link I provided, you do not need to save an ISO or burn it to a DVD. Just do the upgrade in place.
J.R. SitmanIT DirectorAuthor Commented:
It it is a laptop that we purchased with Windows 10 home already on it
JohnBusiness Consultant (Owner)Commented:
Thank you for the clarification.

You have to pay for the PRO upgrade - it is not a free download.  Go to the Microsoft Store and purchase it.
J.R. SitmanIT DirectorAuthor Commented:
I did pay for it.  We have Microsoft Volume Licensing
J.R. SitmanIT DirectorAuthor Commented:
Thanks.  I tried it again and it worked.
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