If you installed Windows 10 on Windows 7 and 8 PCs, you would have noticed that the tool Microsoft download and install first downloads the new operating system, saves it locally, and then starts the installation.
This of course happens if you choose to install immediately and not "Upgrade this PC now" and not download the ISO.
If you choose to download Windows 10 to an ISO file, it will save the file where you choose.
But what if you select "Upgrade this PC now"?
Who stores the installation files the Microsoft tool?
Before we give you the save path, you should allow Windows to display hidden folders.
Follow the steps as described by the image below (1, 2, 3). For those who cannot read the image: Control Panel/ Folders and Options/ and in tab View select show hidden folders. Then Apply and OK.
After allowing Windows to display hidden folders, let's look at the path from where you can find the installation files.
Open any folder and in line which shows the path copy and paste below:
C: \ $ Windows. ~ WS \ Sources \ Windows \ sources
If your operating system is not installed in C: \ change the first letter of the path.
With the files you find in the path, you can make an ISO or copy it to a USB flash drive.
You should know that after installing Windows 10 the files remain where you found them. If you want you can delete them as they use some gigabytes on your disk.