Ok, I saw many similar to mine, but could not find one with my specific situation. I currently have Windows 8. I am trying to install Ubuntu 12.10 to dualboot the computer. However, when I attempt to install Ubuntu 12.10, I just get a "No operating system found." I already attempted to burn the iso through Windows 7 USB/DVD Download tool, ISO to USB, Linux Live. and no avail up until now. What exactly is happening??? I never had this issue before when installing Ubuntu.