Reinstall windown 11 on Alienware m15 r6

I want to reinstall window 11 only on participation C without losing data on participation D E F. How can I do this? We cannot have option to choose participation when the window boot to installation screen. Is that right? I use usb window 11 boot option.

I do not use Dell OS Recovery Tool, because it will reset all manner to factory setting. And integrate all participation into 1. 

Do you have any solution.