In this tutorial we will talk about checking the MD5 sum of the downloaded live CD and how to burn this ISO image onto a blank CD-ROM. Here on the Ubuntu homepage at Ubuntu.com, clicking on download will take you to a page that contains links and information about how to download the live CD installer also called an ISO or CD image. On this page there is a link on instruction on how to burn the CD to a blank disk. This tutorial assumes that one has already downloaded the desktop ISO for the current version of Ubuntu Linux. On this page this describes how in Windows XP to verify the ISO image to make sure the downloaded file was not corrupt prior to burning. It also describes how to actually burn this image onto a blank CD. Now this document right here contains links to two different programs provided by 3rd parties, Hash Tab, which is a program, a free program to verify the hashes or the MD5 sums of the file that you downloaded with the hash that on the Ubuntu website to make sure that the downloaded file was not corrupted. This page also contains a link to a free program called Image Burn which is a free CD image burning program. Now for this tutorial I have already downloaded and installed these two programs and so I will be using these two programs to explain how to compare the MD5 sum and how to burn the blank CD. First, to compare the MD5 sum once Hash Tab is installed the first thing that one will want to do is the right click on the ISO image and select properties and select the file hash's tab, so that is what we will do next. Here is the downloaded ISO, right clicking on it, going to properties and selecting file hash's. The program begins to calculate the hash that is also called the MD5 sum for this downloaded file and this process takes a minute or two. Now once this calculation has completed you will see the calculated MD5 hash for the downloaded file and there is a blank box right beneath it with a button called compare to the right. We need to put the MD5 sum hash for the ISO that we obtained from the Ubuntu site and compare the two. In other words we're comparing the calculated number that's from the file that we downloaded versus the number that Ubuntu has on its web page to make sure they are the same. If they are the same then the file has not been corrupted. We can go ahead and burn it. If they are not the same then the best thing to do would be to remove this file that was downloaded and download it again. So, going back to this page here it contains a link with all the hash files for the various versions of Ubuntu that we downloaded. The version that we downloaded is right here and clicking on that gives you a list of all the MD5 sums for all the different versions of this particular Ubuntu release. As you may recall from a previous tutorial we downloaded this Ubuntu version desk top-I386.ISO. So, I will copy this MD5 sum and go back to this particular program and paste it in this box and click compare and it says the hash's match. So, that was a successful download and we can close this program. Now returning to the Ubuntu page, the next step is to burn this ISO image onto a blank CD. They recommend this program here, image burn, which I have already downloaded and installed. I have already inserted a blank CD into the drive. The next step is to right click on the ISO image and select burn with Image Burn, and then we will click right to disk. So I will right click on this, select burn using Image Burn and once the image has loaded up, you will then be able to burn. Now this particular computer does not have a burner but one would simply just click this button to write the CD, the image here, the ISO image onto a blank CD-ROM. This process might take a few minutes but once it is complete you now have Ubuntu Linux burned onto a CD-ROM that can be rebooted and used as a live CD for testing purposes prior to installing it onto the hard drive and that's the next step we will take. That's the end of this tutorial. Thank you very much.