I did the install through the LiveCD. After I did that, it restarted the computer. When I chose to boot Ubuntu, the screen popped up saying "Unable to find medium containing live file system". I don't know what exactly to do, as I don't know whether or not I stopped it from controlling it.
Edit: At one point it told me to remove the CD, close the tray, and hit enter to continue. It seems to work fine with the CD in.