</ol><ol><li value="14">View the section below to learn about and perform an update on your fresh Fedora install (you may have to find spare time to perform this install if you are running short on lab time). '''Do <u>not</u> proceed to Investigation 3 without performing an update'''.</li></ol> {{Admon/tip |Consider Remaining Lab Time Prior to Performing Upgrade|'''Carefully check the remaining time in your lab prior to performing an upgrade on the operating system'''. It can take 30 - 90 minutes to perform an upgrade...}} <ol><li value="15">The CentOS software is updated frequently to add features, fix bugs, and upgrade security. Perform a system update to get the latest versions of the packages installed: Start the Firefox web browser, turn off popup window blocking (select ''Edit>Preferences'', then select the Content tab and uncheck the box to Block Popups), then login to SeneNET. Open a terminal and type <code>su</code> to start a shell as root. Enter the command <code>yum update</code> This will download and install all of the packages that have been updated since the installation DVD image was created. If you complete this command at Seneca it should run quite fast as Seneca College hosts a CentOS Repository mirror (a copy of all of the current fedora packages, on a local web server).</li>