Upgrade from Ubuntu 12.10 to 13.04 "Failed to fetch cdrom://Ubuntu 12.10 _Quantal Quetzal"
10193
Failed to download repository information due to missing CDROM
43778
Is it possible to "upgrade" from a 32bit to a 64bit installation?
75798
How to upgrade to the latest GNOME version?
128253
do i need to reinstall all my softwares after upgrading ubuntu 12.10 to 13.04?
40013
Why does Ubuntu Download recommend 32-bit install?
144507
No facility exists in Update Manager to upgrade to a new version, why?
109539
How can I perform an offline upgrade using Ubiquity on the installation disc?
91491
How can I get "delta" packages to optimize apt-get upgrade downloads?
12578
How do I upgrade to a newer version of Ubuntu?
74079
How to Upgrade Ubuntu 12.04.2, 12.04.3 to 12.04.4, the next Hardware Enablement Stack?
7181
apt-get is stuck at "Fetched XXKb in XXsec"
33651
How to upgrade from Ubuntu 12.10 to 14.04
93942
How to fix "Failed to download repository information" error while updating?
67359
Upgrade to the latest PHP version in Ubuntu
49149
How do I solve "Unable to fetch some archives, maybe run apt-get update or try with --fix-missing" error?
90512
Upgrading from 12.10 WUBI install to 13.04
55211
Problem when upgrading to Ubuntu 14.04 from Ubuntu 12.04