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I am running Ubuntu 14.10 server

I'm getting this icon in the notification bar over the last days, even though Software Center is running updates properly and I have no new updates available.

I have run sudo apt-get update && sudo apt-get upgrade and still have this problem.
The output after running sudo apt-get update is:

W: Failed to fetch cdrom://Ubuntu-Server 14.10 _Utopic Unicorn_ - Release i386 (20141022.2)/dists/utopic/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-Server 14.10 _Utopic Unicorn_ - Release i386 (20141022.2)/dists/utopic/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.

How can I fix this issue?

marked as duplicate by Eric Carvalho, David Foerster, mikewhatever, Eliah Kagan, Panther Apr 5 '15 at 0:10

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  • Are you sure you use 12.10 and not 14.10? 12.10 is end-of-life. – Byte Commander Mar 31 '15 at 17:18
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Click on the Unity dash (or other menu system) and open "Software Sources" sometimes also called "Software & Updates". Then what you need to do is go to the "Other Software" tab, and uncheck the option listing a cdrom. Then click apply, and update again and that should fix it

  • This works for me 1.Open software and updates 2.Under Ubuntu software/Installable from CD-ROM/DVD 3.Untick CDrom with Ubuntu 14.10 'Utopic Unicorn' Thanks – Carlos Mar 31 '15 at 17:40
  • Sorry I have changed it to Ubuntu server 14.10 – Carlos Mar 31 '15 at 17:47
  • If this helped, please mark the answer as correct by clicking the gray checkmark to the left of the answer. We will both gain reputation. – Organic Marble Mar 31 '15 at 18:04

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