Re: Did a clean install of Win 10 without upgrading


This link may explain why that worked. It's just slightly different.

In the article you'll find this excerpt.:

For those who are anxious to do a clean install, here's the trick:

Don't do the online upgrade.

Instead, from your current, activated copy of Windows 7 or Windows
8.1, download the Windows 10 ISO file for the corresponding edition
(Home or Pro), or create a bootable USB flash drive. Without exiting
your current Windows version, double-click the ISO to mount it as a
virtual DVD (or open the USB flash drive with installation media) and
then double-click Setup.

Your goal is to get to the screen with this full range of options:


Choose the option I've highlighted at the bottom: the one that says
you want to keep nothing. The Windows 10 Setup program installs a
clean copy of the edition that corresponds to the one you have
installed. As part of the process, it verifies the activation status
of your old Windows, creates the new license certificate, and blows
away your previous install. And you never had to enter a product key.

Here's the full article:


On 11/13/15, Carlos <> wrote:
Interesting that you did not need your product key when installing it in a
dual boot configuration. Perhaps it simply detects that there is an
existing qualifying Windows installation on the system and allows it based
on this fact.
----- Original Message -----
From: Loy
Sent: Friday, November 13, 2015 8:14 PM
Subject: Re: [TechTalk] Did a clean install of Win 10 without upgrading

Did not need a key at all.
----- Original Message -----
From: Matt
Sent: Friday, November 13, 2015 8:08 PM
Subject: Re: [TechTalk] Did a clean install of Win 10 without upgrading

So all u needed is your w7 product key ?

Sent from my iPhone

On Nov 13, 2015, at 7:44 PM, Loy <> wrote:

For those that wanted to know, I just did a clean install of Win 10
from an ISO I downloaded today with the Media creation Tool. I booted the
computer with the ISO disk and chose to install to a partition I created
earlier. I now have Win 7 and Win 10 as dual boot.

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