Failed to download repository information

Asked by Aniketgoel

Below is the error description i am receiving since i have upgraded to UBUNTU 11.10

W:Failed to fetch cdrom://Ubuntu 11.04 _Natty Narwhal_ - Release i386 (20110427.1)/dists/natty/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 11.04 _Natty Narwhal_ - Release i386 (20110427.1)/dists/natty/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.

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Ubuntu apt Edit question
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Solved by:
delance
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Best delance (olivier-delance) said :
#1

Do you upgrade through Ubuntu installation CD or update-manager ?
In last case, in preferences, remove CD from list of repositories

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Aniketgoel (aniketgoel) said :
#2

I use Update manager. Which is the option to remove CD from list of repositories?

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Aniketgoel (aniketgoel) said :
#3

Thanks delance, that solved my question.