Before you begin, make a backup of important files.
Before starting any upgrade process, it is recommended to disable all third-party software library.
When everything is ready to start using the following steps:
For desktop version
Open a terminal, run the command
$ sudo apt-get update && sudo apt-get dist-upgrade
Press Alt F2 key combination to bring up the run command box:
$ update-manager –d
"Software Update" window will appear. Check for updates, you will see the prompt "Ubuntu 13.04 now available.Click the Upgrade
If getting "System program problem detected" pops up regularly after upgrade, open a terminal and remove all old crash-reports that might exist in the crash-report directory:
$ sudo rm /var/crash/*
After a reboot the popups are gone.
For Server version
Execute the following commands:
$ sudo apt-get update $ sudo apt-get upgrade $ sudo apt-get install update-manager-core $ sudo do-release-upgrade -d
If you are using LTS version execute the following commands:
$ sudo apt-get update $ sudo apt-get upgrade $ sudo apt-get install update-manager-core $ sudo vim /etc/update-manager/release-upgrades
File
Prompt = lts
Changed
Promet = normal
Then execute the command:
$ sudo do-release-upgrade -d