I bought a PC with Windows 8 Home and performed the update to Windows 10. The only problem I had with Windows 10 was the unannounced and automatic update process. I would start a backup and find Windows would be doing an update, or I would shutdown in the middle of an update. I upgraded to Windows 10 Pro simply to be able to control the update process. I am happy with the results. The only confusion I have is how do I do a clean install of Windows 10 Pro if I ever need to do it? The only installation material I have for Windows 10 is the Windows 10 Media Creation Tool that was available from the Windows 10 Update site. From what I read, if I have previously activated my Windows 10 Pro, the Media Creation Tool DVD would cause Windows 10 Pro to be installed. Now the free Windows 10 Update deal has expired, will the Media Creation Tool DVD I have still work to clean install Windows 10 Pro? Since I have a valid and active Windows 10 Pro license, is it possible to buy an Windows 10 ISO file to create a Windows 10 Pro installation DVD? I am hopeful I will never have to perform a clean install, but I have been through clean installs on Windows 8 and Windows 10, so I assume I may eventually need to do one for Windows 10 Pro. I want to be prepared in case the need arises.