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I have downloaded Ubuntu 12.04.01 from the Ubuntu site and tried to make a LiveCD, LiveDVD, LiveUSB but while finishing burning it got some curruption. CD/DVD did not come out automatically. It says take it out mannually. When I pull out manually it shows some curruption occurred.

What is the correct way to create a LiveDVD or LiveUSB for upgrading my previous version. And what is the method to Upgrade with this LiveDVD or USB.

Thanks.

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If you are already on 12.04, you don't need a liveCD to upgrade. Just update your question like you always do. – jokerdino♦ Aug 31 '12 at 10:45
If you're not on 12.04, how are you burning the CD? Did you also check the MD5SUM? – Mitch Aug 31 '12 at 10:54
But then it's clearly NOT upgrade. Use an alternate image or use the update manager – smartboyhw Aug 31 '12 at 10:57

2 Answers

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Well, you should check your MD5SUM of the iso image to see if it is a corrupted download. See HowToMD5Sum. Use UNetbootin to burn the ISO image. If you're using a CD/DVD, use a slower burn speed. However if you are to upgrade, use an alternate image and mount it, or just use the update manager, or use sudo do-release-upgrade in terminal.

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Recently I have made several CD and all of them became corrupted. Then I decided to write it on a DVD and I got success.
It seems my CDs or/and CD Writer have problem when the image size is near to the CD max size.

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