The dvd/cd rom otherwise works fine.This is the error I got after a lot of trouble after install and some updates:
GPG error: http://ppa.launchpad.net lucid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 632D16BB0C713DA6Failed to fetch cdrom://Ubuntu 10.04 LTS _Lucid Lynx_ - Release i386 (20100429)/dists/lucid/main/binary-i386/Packages.gz Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Failed to fetch cdrom://Ubuntu 10.04 LTS _Lucid Lynx_ - Release i386 (20100429)/dists/lucid/restricted/binary-i386/Packages.gz Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Failed to fetch http://ftp.debian.org/dists/etch/mai...86/Packages.gz 404 Not Found
Some index files failed to download, they have been ignored, or old ones used instead.
This at top:
Could not download all repository indexes
The repository may no longer be available or could not be contacted because of network problems. If available an older version of the failed index will be used. Otherwise the repository will be ignored. Check your network connection and ensure the repository address in the preferences is correct."
I had just wiped and re formatted after too many problems with Mint Isadora.I went back to having 10.04 rather than a Mint dual boot with Ubuntu 10.10.
If I can't fix this I'll have to wipe my disk and start again,again.I want stability in my OS no.1.
Edit: I'm having difficulty finding terminal commands,which is what this is about I know.That's a priority in moving forward.