Ubuntu
update-manager package

can't update karmic koala

Asked by alex

GPG error: http://packages.medibuntu.org intrepid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2EBC26B60C5A2783Failed to fetch cdrom://Ubuntu 9.10 _Karmic Koala_ - Release i386 (20091028.5)/dists/karmic/main/binary-i386/Packages.gz Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Failed to fetch cdrom://Ubuntu 9.10 _Karmic Koala_ - Release i386 (20091028.5)/dists/karmic/restricted/binary-i386/Packages.gz Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Some index files failed to download, they have been ignored, or old ones used instead.

(this is what I get when using the update manager)

What does all this mean, and what do I do, if anything, to remedy this?

I need step by step idiot proof instructions please and thank you.

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Ubuntu update-manager Edit question
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Solved by:
zvacet
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wojox (wojox) said : 		#1

Okay open System > Administration > Software Sources > Ubunut Software.

Look down at Installable from CD-ROM/DVD

Uncheck that option.

Now move to Other Software tab

Look for Medibuntu click on the one or two options and remove them.

Now move to Authentications

Look for Medibuntu and Remove.

Now close Software Sources. IT should ask if you want to update your source file. Check yes.

Open a terminal and copy and paste this:

sudo wget http://www.medibuntu.org/sources.list.d/karmic.list --output-document=/etc/apt/sources.list.d/medibuntu.list

Then this:

sudo apt-get update && sudo apt-get install medibuntu-keyring && sudo apt-get update

That should be it your ready to go.

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alex (alexredding1607) said : 		#2

I did everything you said and it came up with this:-

WARNING: The following packages cannot be authenticated!
  medibuntu-keyring
Install these packages without verification [y/N]? y
E: Some packages could not be authenticated

Is that alright or is it just being stupid

Revision history for this message
Best zvacet (ivicakolic) said : 		#3

sudo apt-get --yes --quiet --allow-unauthenticated install medibuntu-keyring &&
sudo apt-get --quiet update

Revision history for this message
wojox (wojox) said : 		#4

Enter

y

to install the packages. I'ts the keyring your installing.

Revision history for this message
alex (alexredding1607) said : 		#5

Thanks zvacet, that solved my question.

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alex (alexredding1607) said : 		#6

thanx to all who helped me