Problems in linux

[vaibhav23]

I am having a weird issue that ubuntu and linux mint both during live cd are not identifying one of my partitions and enlist a single partition as 406 gb although there should have been two different partitions.
While installing I want to know whether I should create a 10gb partition in windows and then use or keep it as unpartitioned space and create a partition while installing

 

[thetechfreak]

Create a partition while installing.

Doesn‘t clicking the 400~GB partition open the partitions you made? It should.