Remember your old passwords from your old OS, they will get restored as well. Microsoft Nag screen will come up asking why you would want to go back, and will give you some reminders about passwords, etc. When launched for the first time, Ubuntu will inform you that it’s ‘Installing’ and you’ll need to wait a few moments.

Ubuntu can now be launched in the same way as any other Windows 10 application, such as searching for and selecting Ubuntu in the Start menu.