Ok so I'm a new mac user and have had my mac book pro for less than a month now, and I figured I would give boot camp a try so I used the boot camp utility to parition the hard drive and that all went fine. I decided that I no longer need the windows partition so I used the utility to delete the parition. I have a problem now, when ever I start up my mac from being shut down I have to hold the option key so I can select which hard drive to boot from, there is only one option and that is the mac hard drive. If i don't hold the option key it goes to a black screen telling me to put in a boot-able disk. So I would like some help on how to make it so I don't have to hold the option key at start up. Any help would be great. Thanks!