cannot create partition on macbookpro 13" retina late 2013
I tryed several times but always the same error, I cannot create partition on macbookpro 13" retina late 2013, maverick and win 7 64
I read this article but doesn't resolve: http://support.apple.com/kb/TS4560?viewlocale=en_US&locale=en_US
Please help me
MacBook Air, OS X Mountain Lion (10.8.3)