New
#11
This tutorial
Upgrade to Windows 10 | Windows 10 Tutorials
and the many links under Resolve Windows 10 upgrade errors and the link preceding that gives a great resource to fix upgrade problems, and a variety of approaches, including elementary practical steps, MS sites and details of logs you can inspect.
Noting
Safe OS phase: A recovery partition is configured, Windows files are expanded, and updates are installed. An OS rollback is prepared if needed. Example error codes: 0x2000C, 0x20017.
Do you have any unallocated space on your disk?
Please post a screenshot of your partition layout.