It's possible to perform an upgrade of Windows by using an external storage device if your hard drive is almost full.
You can return to your previous Windows installation if you are unsatisfied with Windows 10.
When you're trying to update or upgrade Windows, errorcode 0x800704dd-0x90016 occurs.
When attempting to install a Microsoft Visual C++ 2012 update, it keeps repeatedly downloading and installing the same update.
When trying to perform an upgrade the process is interrupted and the system is reverted back to the previous Windows.
Windows won't load it's desktop after an upgrade to Windows 10