You can only format any partition during installation, you are about to upgrade to Windows 10, which I am certainly sure will not give you any options for your current partitions. (All due it's an upgrade done while Operating System is running, and not installation loaded prior to OS running.)
As for One Key Recovery, I assume that Lenovo will release drivers soon enough. By looking around I saw a topic at Micro$oft that people could leave feedback for compatibility, so far 3/9 could make Windows 8.0 Version of One Key Recovery to work on Windows 10.