I updated Ubuntu from 12.04 to 12.10 and finally to 13.04. When I had the 12.04 version my CD/DVD drive was recognized and worked normally. Now that I updated Ubuntu it doesn't show the drive, ...
I am a newbie with Ubuntu during the past two weeks, and I believe, that I have made good progress so far. Current setup tasks are completed, like: "Wireless Network, Printer, Thunderbird + Firefox, ...