I just set boot camp assistant to partition my hard drive. When it finished, it said to hold down the power button to restart. I held it down but my Macbook shut down instead of restarting. When it rebooted into OS X, the available size of my hard drive decreased by 11 gigs like I wanted for the partition, but boot camp assistant is asking me to partition again. I see no option to start Windows installer. Can someone lend a hand please?? Thanks.