Diskpart ver6.0.6000 does not activate osx partition

[abstract]

Hi there,

 

I am just installed osx without any problem. I can see 15 Gb partition (for osx) from disk management tool. But i can not active it. I open disk part from run dialog. and wrote follwings:

 

select disk 0

select partition 2

active

 

the result is "The selected partition cannot be marked as an active parititon because of its type."

 

I am using Vista Home Premium on Asus Notebook. How can i handle this problem??

 

Thanks in advance