Updating ubuntu from cd
Fortunately, Ubuntu Linux makes updating your operating system easy.
The notice appears in the top right hand corner of the desktop as follows: Clicking on the red down arrow with the white exclamation mark will launch the Ubuntu Update Manager.
The dialog shows the display after the option to Show progress of single files has been selected: In addition to providing details of the progress of the update process, the dialog also shows the current download speed and provides an estimate of the remaining time to completion.
Once the update packages have been successfully download the Update Manager begins the process of applying the updates to the operating system begins.
To deal with this avalanche, many people prefer to use a more automated method.
Several different packages are available for this purpose: for more information.