How to install win10 preview?

1, after downloading the image, open the ISO image (Note: Win8/8.1 can be directly double-clicked, Win7 can be loaded with a virtual CD-ROM drive), directly run the setup.exe in the mirror root directory,
2, accept the license Terms

3, check the installation environment. This may take a while, depending on the amount of software in the system you are currently using.

4. After the check is complete, the installer will list things you need to be aware of, such as missing system features or existing software. Compatibility and so on. If there are no things to note, the results shown below will appear.

5 Here you can also change what you need to keep after the upgrade. Click “change the content to be kept", the following image appears
6. Select the item to keep.
If you select “do not retain any content", the "Personal Files" after the upgrade will still be saved and moved to a folder named Windows.old.

7. Click on the installation.

Then wait for the system to be installed. This will be a very time consuming process. Ok, you will enter the win10 desktop.