I am attempting to install Yellowdog on a Performa 6360, which is the only Performa which will actually boot Linux. Yesterday I went through the initial preparations. I created my parititions, installed OS 9.1 on one partition, and then using BootX switched into Linux. After selecting my default language and keyboard layout, I attempted to begin the installation. I installed the first CD, which I had burned from the ISOs I had already downloaded, and selected CDROM. A message instantly presented itself and stated that the CDROM could not be found. What do I need to do now?