I had installed windows 7 on my macbook just to try it out. It was a nice experience, and I had no problems installing it. I only found it annoying that the system made Windows7 my main OS, so whenever I started up the computer it would load windows unless I was holding the option key to select mac OSX (is there a way to change this, anyway?) Well, so I removed the Windows partition using bootcamp as well and it made a single OSX partition. However.... whenever I start up my laptop, it get the following message: "No bootable device -- insert boot disk and press any key" I presume that this is due to the system trying to start up as windows, which doesn`t exist anymore. So, again, I have to hold the option key whenever I start up the computer, which is VERY annoying. How can I revert this to the default settings? Thanks!