When I ran sudo apt-get update
then I found some error. The Error is like below:
W: Failed to fetch cdrom://Ubuntu 13.04 _Raring Ringtail_ - Release amd64 (20130424)/dists/raring/main/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
W: Failed to fetch cdrom://Ubuntu 13.04 _Raring Ringtail_ - Release amd64 (20130424)/dists/raring/restricted/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
W: Failed to fetch cdrom://Ubuntu 13.04 _Raring Ringtail_ - Release amd64 (20130424)/dists/raring/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
W: Failed to fetch cdrom://Ubuntu 13.04 _Raring Ringtail_ - Release amd64 (20130424)/dists/raring/restricted/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
E: Some index files failed to download. They have been ignored, or old ones used instead.
Could anyone please help me why I am getting this kind error message? I've just found the Error message today on my machine
sudo gedit /etc/apt/sources.list
and remove/comment the lines that containcdrom
. It would be advisable to show us the contents of/etc/apt/sources.list
, just in case.