Ubuntu: How to burn an ISO file larger 4.7 GB onto a DVD


I downloaded centos everything ISO which about 6.4GB in size however I could not write that ISO file onto a DVD using k3b tool as it is showing Blank dvd doesn't have enough space. I want to dual boot my computer one with Ubuntu and another one with Centos, For installing CENTOS i need to write that everything ISO on to the DVD which is of 4.7 GB in capacity and then go for installation.

How should i ?


It's just a matter of media.

If the DVD ISO you have to write onto the media is bigger than 4.7 GB, you can use double-layer DVD if your writer is able to support this kind of DVD.

Then you can put almost the double of 4.7 GB on a single double-layer DVD. Of course, if the ISO size exceeds the size limit of a double-layer DVD, you cannot do anything more with a DVD.


There are two links to download CentOS 7 (the latest version) from the download site at centos.org. If you choose the first link by clicking the button that says DVD ISO you be asked to select a mirror and then download a 3.9GB CentOS ISO file that will fit nicely on a DVD. Clicking the other download button will download a bigger ISO that has a lot of additional packages that you don't need.

Alternatively CentOS can also be written to an 8GB USB flash drive (or larger than 8GB) using UNetbootin from the Ubuntu Software Center. For general instructions about how to create a bootable USB stick using UNetbootin see this answer.

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