Thanks for posting. It is very strange that you have a Windows 10 Compact install with so much available disk space. Compact installs are quite rare and generally only provided when local storage is at a premium, such as found on some small tablet PC's.
PE versions before PE 10 are not able to read compacted files on the Windows 10 system partition, so, browsing the file system in PE explorer and running 'Fix Boot Problems' will be problematic. Straight restores should be fine but upgrading to PE 10 is the best option.
Nick - Macrium Support