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I am not able to upgrade to the latest version 13.04. The error is:

Failed to download repository information
Check your Internet connection.
Details
W:Failed to fetch cdrom://Ubuntu 12.10 _Quantal Quetzal_ - Release i386 (20121017.2)/dists/quantal/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 12.10 _Quantal Quetzal_ - Release i386 (20121017.2)/dists/quantal/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.
thefourtheye
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upgrade fails
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2 Answers2

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Comment the cdrom entry out in /etc/apt/sources.list, it's likely one of the first lines in the file. Another way to do it is the Software sources graphical tool.

grimpitch
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Execute the following command...

sudo software-properties-gtk

In the window which opens up,

Deselect the CD-ROM entry, in the Installable from CD-ROM/DVD

enter image description here

thefourtheye
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