I recently started using linux mint. I am trying to execute the following command in my terminal  sudo apt-get update . But I always get this output:How can I solve this issue?...Ign:10 http://archive.canonical.com sarah/partner all PackagesIgn:11 http://archive.canonical.com sarah/partner Translation-en_GBIgn:12 http://archive.canonical.com sarah/partner Translation-enReading package lists... DoneW: Target Packages (partner/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list.d/additional-repositories.list:1 and /etc/apt/sources.list.d/additional-repositories.list:2W: Target Packages (partner/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/additional-repositories.list:1 and /etc/apt/sources.list.d/additional-repositories.list:2W: Target Translations (partner/i18n/Translation-en_GB) is configured multiple times in /etc/apt/sources.list.d/additional-repositories.list:1 and /etc/apt/sources.list.d/additional-repositories.list:2W: Target Translations (partner/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/additional-repositories.list:1 and /etc/apt/sources.list.d/additional-repositories.list:2W: The repository 'http://archive.canonical.com sarah Release' does not have a Release file.N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.N: See apt-secure(8) manpage for repository creation and user configuration details.E: Failed to fetch http://archive.canonical.com/dists/sarah/partner/binary-i386/Packages  404  Not Found [IP: 91.189.92.191 80]E: Some index files failed to download. They have been ignored, or old ones used instead.W: Target Packages (partner/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list.d/additional-repositories.list:1 and /etc/apt/sources.list.d/additional-repositories.list:2W: Target Packages (partner/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/additional-repositories.list:1 and /etc/apt/sources.list.d/additional-repositories.list:2W: Target Translations (partner/i18n/Translation-en_GB) is configured multiple times in /etc/apt/sources.list.d/additional-repositories.list:1 and /etc/apt/sources.list.d/additional-repositories.list:2W: Target Translations (partner/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/additional-repositories.list:1 and /etc/apt/sources.list.d/additional-repositories.list:2Thanks in advanceEDIT: cat /etc/apt/sources.list.d/additional-repositories.list :deb http://archive.canonical.com/ sarah partnerdeb http://archive.canonical.com/ sarah partner
Why am I unable to do a sudo apt-get update?
command line;linux mint;terminal;upgrade
First of all, note that apt-get update still updates its indexes as appropriate, it's just complaining that it can't download the information required for some of its repositories.sarah is a Mint code-name, not an Ubuntu code-name, so it makes no sense to try to use a sarah repository hosted by Canonical; you can safely delete the additional repositories:sudo rm /etc/apt/sources.list.d/additional-repositories.listThis will fix the errors you're seeing.