Hi, Can anyone please advise on how to do property(house) partition if the house is in the name of m

Hi, Can anyone please advise on how to do property(house) partition if the house is in the name of my deceased grandmother. The property will is in the hand of my uncle who is behaving rude with my father and other family members. If my father asked for the will he is behaving arrogant. We total are 8members in family and father's sister is married. Our house consists of 5rooms (including bathroom) in ground floor and 4rooms in first floor(including bathroom). My uncle occupied total 5rooms(including kitchen) and my father occupied only 3 rooms(including kitchen). Now uncle is not letting us to enter 2 common rooms in the house which was occupied by my uncle forcefully. If we asked for partition they are denying and behaving rudely with my father. They are forcefully occupied 2 common rooms in the house. Is there any way to do partition forcefully in the house if they take 1st floor and let us use the ground floor. They are not letting us to view the property deeds if asked for.