i have install bootcamp from bootcamp assists. But when i go to my bootcamp windows from boot option i see my mac and windows partition double is 4. How i can remove 2 partition double on screen boot menu?
You can see screen short on attach file
try a PRAM reset
Option, Command (⌘), P, and R when rebooting. hold it down and let it reboot atleast 4 times to see if it clears it.