I recently tried out the live CD of 12.04 64bit beta2, but did not install it. Now I am back using 11.10 64bit, I have problems when updates are available.I get a message saying CD/DVD 'Ubuntu 12.04LTS_Precise Pangolin_- Beta amd64(20120328) is required. When I insert the disk a message says Failed to download package files, check your internet connection. The details show failed to fetch cdrom ubuntu 12.04 lts
My system is a desktop alienware amd 64 4000+ with 2gb ram,ubuntu 11.10 dual booting with windows xp.
I thought the idea of using a live cd was that you can try out an OS without it affecting your current system.
Does anyone know why this should happen when its not been installed?