Fedora Failing to Install on Virtual Box in Mac OSX

I'm trying to install Fedora on Virtual Box on my macbook. I setup a VDI drive from the selection list and allocate 20gb hard drive space and 4gb of ram. Boot up the machine and load from the Fedora ISO image and go through the installation process. The installation finishes and requires a reboot so I select reset from the virtual box menu, and when it boots back it leads me to the same menu I started with (Try Fedora and Install to Disk). I've tried installing it multiple times, powering off the machine then booting it back and I get the same result. I'm driving and not at my computer now, but I think powering off the machine and 'saving current state' might do the trick. Can anyone confirm or state another solution?