How to have multiple mac partitions on a dual system macbook?

hi guys,
know how install windows 7 on macbook. however, after installation, has 1 mac partition , 1 windows partition. work majorly on mac , need 2 more mac partition, 1 data , 1 movies. tried make more mac partitions disk utilities. windows won't boot after this. question can have multiple mac partitions on dual system macbook? , how?

way, don't want reinstall mac.

input appreciated.

 

why need 2 more partitions mac os x?

 

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