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root@v0132:~# lsb_release -a;
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 11.04
Release:        11.04
Codename:       natty
root@v0132:~# sudo apt-get update
Ign http://archive.canonical.com natty InRelease
Ign http://archive.ubuntu.com natty InRelease
Ign http://archive.ubuntu.com natty-updates InRelease
Ign http://archive.ubuntu.com natty-security InRelease
Hit http://archive.canonical.com natty Release.gpg
Hit http://archive.ubuntu.com natty Release.gpg
Hit http://archive.ubuntu.com natty-updates Release.gpg
Hit http://archive.canonical.com natty Release
Hit http://archive.ubuntu.com natty-security Release.gpg
Hit http://archive.ubuntu.com natty Release
Hit http://archive.ubuntu.com natty-updates Release
Hit http://archive.ubuntu.com natty-security Release
Hit http://archive.canonical.com natty/partner amd64 Packages
Ign http://archive.canonical.com natty/partner TranslationIndex
Hit http://archive.ubuntu.com natty/main amd64 Packages
Hit http://archive.ubuntu.com natty/restricted amd64 Packages
Hit http://archive.ubuntu.com natty/universe amd64 Packages
Ign http://archive.ubuntu.com natty/main TranslationIndex
Ign http://archive.ubuntu.com natty/restricted TranslationIndex
Ign http://archive.ubuntu.com natty/universe TranslationIndex
Hit http://archive.ubuntu.com natty-updates/main amd64 Packages
Hit http://archive.ubuntu.com natty-updates/restricted amd64 Packages
Hit http://archive.ubuntu.com natty-updates/universe amd64 Packages
Ign http://archive.ubuntu.com natty-updates/main TranslationIndex
Ign http://archive.ubuntu.com natty-updates/restricted TranslationIndex
Ign http://archive.ubuntu.com natty-updates/universe TranslationIndex
Hit http://archive.ubuntu.com natty-security/main amd64 Packages
Hit http://archive.ubuntu.com natty-security/restricted amd64 Packages
Hit http://archive.ubuntu.com natty-security/universe amd64 Packages
Ign http://archive.ubuntu.com natty-security/main TranslationIndex
Ign http://archive.ubuntu.com natty-security/restricted TranslationIndex
Ign http://archive.ubuntu.com natty-security/universe TranslationIndex
Ign http://archive.canonical.com natty/partner Translation-en
Ign http://archive.ubuntu.com natty/main Translation-en
Ign http://archive.ubuntu.com natty/restricted Translation-en
Ign http://archive.ubuntu.com natty/universe Translation-en
Ign http://archive.ubuntu.com natty-updates/main Translation-en
Ign http://archive.ubuntu.com natty-updates/restricted Translation-en
Ign http://archive.ubuntu.com natty-updates/universe Translation-en
Ign http://archive.ubuntu.com natty-security/main Translation-en
Ign http://archive.ubuntu.com natty-security/restricted Translation-en
Ign http://archive.ubuntu.com natty-security/universe Translation-en
Reading package lists... Done
root@v0132:~# sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@v0132:~# sudo apt-get install partimage
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package partimage is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'partimage' has no installation candidate
root@v0132:~#