unable to boot

As i can see by your last statement, it seems you put the iso image directly into the dvd's, what you have to do is to burn the contents of the iso image into the dvd, not the image itself. You can use a burning software like brasero or k3b for linux, or nero, roxyo easy cd creator for win.
You can check if the discs are burned corectly if you see an installation menu when you boot from the disc. Ubuntu also has an option to check the integrity of the disk, you should try that too.
Once everything is ok, the installation is pretty easy, just follow the instructions given.
Hope this helps.
Dimitri.

Sir

I burned the iso file using nero onto the dvd it is about 686MB (ubuntu) and i have also burned open SUSE into another dvd iso image (4.24GB) but both wont boot. Is there anything else i cando.
thanking you sir for your prompt reply.

Lin

--- On Tue, 6/2/09, Dimitri Garza <email address hidden> wrote:

From: Dimitri Garza <email address hidden>
Subject: Re: [Question #73003]: unable to boot
To: <email address hidden>
Date: Tuesday, June 2, 2009, 4:04 PM

Your question #73003 on Ubuntu changed:
https://answers.launchpad.net/ubuntu/+question/73003

    Status: Open => Answered

Dimitri Garza proposed the following answer:
As i can see by your last statement, it seems you put the iso image directly into the dvd's, what you have to do is to burn the contents of the iso image into the dvd, not the image itself. You can use a burning software like brasero or k3b for linux, or nero, roxyo easy cd creator for win.
You can check if the discs are burned corectly if you see an installation menu when you boot from the disc. Ubuntu also has an option to check the integrity of the disk, you should try that too.
Once everything is ok, the installation is pretty easy, just follow the instructions given.
Hope this helps.
Dimitri.

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Did you MD5 check the ISOs? Did you verify the CD was consistant once booted to?

To burn the iso (In Ubuntu and Windows):

right click ISO file -> open with -> <name CD burning software here>

Nero / Brasero / K3b / Gnomebaker ALL support this functionality. You do NOT create a data disk and put the file on the disk. This will not work, the ISO is an image of the data and will have the boot sector required, this will not be written if you use this method.

Before burning, MD5 check the ISO, a bad ISO WILL give you issues. If the MD5 hashes do not match then you will need to redownload.

How do i do the MD5 check?

https://help.ubuntu.com/community/HowToMD5SUM
https://help.ubuntu.com/community/VerifyIsoHowto

Read those, MD5 summing is ESSENTIAL to garunteeing a good download. The internet is made up of a vast number of connection devices which we blindly rely on. If one has an issue then the data yuo recieve can get garbaged and also pass TCP based packet checks. If this happens you will have a rubbished ISO file which is useless. MD5 checks allow you to calculate a hash then compare it to the hash file on the server. If the do not match exactly then the file has been correupted and must be redownloaded until you get the correct hash.

I wouldnt recomend burning a CD ISO on a DVD. I can recmomend the open source burning app InfraRecorder, it's very easy to use: http://infrarecorder.org

Or CDBurnerXP (also free)

DOWN WITH NERO!!!