How to change the Boot up partition names?

[ShinJi715 0]

i have two disk installed. so i can use bootcamp to make two more partition for other system.

here is the problem. If i instill a Ubuntu on the bootcamp partition when i boot up it still says windows, but i already have a partition which named Windows with windows installed. some time i got confused that which is windows or ubuntu. How would i change it?

 

I don't want to any other non-apple default boot loader

 

Is there any way to do it?

 

Thx!