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Possible Duplicate:
Failed to download repository information due to missing CDROM

How to resolve the following error message?

Error Message:

W:Failed to fetch cdrom://Ubuntu 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120823.1)/dists/precise/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 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120823.1)/dists/precise/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,           
W:Failed to fetch cdrom://Ubuntu 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120823.1)/dists/precise/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 12.04.1 LTS _Precise Pangolin_ - Release amd64 (20120823.1)/dists/precise/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, 
E:Some index files failed to download. They have been ignored, or old ones used instead.
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rakesh
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1 Answers1

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open update manager go to settings -> ubuntu software and unchek your CDROM then go to other software and uncheck all CDROMs