Ok, I have an iMac and last night I got a message that I needed to install an update and I somehow shut it down while clicking to restart and install and now my OS X is gone. Whenever I boot it up it asks me to set up my profile and register my Mac etc. But, I made a back up of my install disc (which I am unable to locate now), but that's only on my OS X partition. I found out all of my personal files are intact by navigating through single user mode and located the .iso file, so now hopefully I can burn it and reinstall the OS. I searched online and found that "hdiutil burn image.iso" allows me to burn it, but it says that there is no cd/dvd drive detected. Does anyone know how to get around this? How do I mount the drive? I'm not too familiar with all the different commands that there are.