Boot camp problems with booting after aborted windows install

I tried to install windows but lost my activation key therefore aborted the windows install and when I tried to boot up again it said no system disk available insert disk and press any key. I launched in OS X by pressing the menu key on my apple remote. I then went into startup disk on the system preferences and select the OS X disk as my startup disk( I had already removed the windows partition using boot-camp) OS X loads up fine now but I am asking do I have more than the one partition now on my hard drive. I dont want any wasted space you see.

 

Hey thanks that did it for me