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How do I burn the latest 12.10 790 MB ISO to a CD?

My burning software says insert a disk but 700 MB CD's are too small. I tried a DVD and that didn't work either.

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There are also CDs with ~800mb capacity – silent_cookie Nov 25 '12 at 13:26
this is about the newer images being too big for cd - not the old barely fitting. – Mateo Feb 4 '14 at 0:58
Alternatively, use the minimal image – Wilf Nov 30 '15 at 4:19

16 Answers 16

This was a decision made some time ago by Canonical, the corporate backers for Ubuntu.

See: OMG! Ubuntu > It’s Official: The Ubuntu LiveCD is Dead

The news came from Canonical’s Kate Stewart on the Ubuntu Mailing list, who wrote:

There is no longer a traditional CD sized image, DVD or alternate image, but >> rather a single 800MB Ubuntu image that can be used from USB or DVD.

I stopped burning a CD (or DVD) for ISO files about 2 years ago.

A cheap 2GB Flash USB drive is 3-4 times faster for installs, and can be repeatedly reused (for later releases).

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DVDs still work... – Wilf Nov 30 '15 at 4:18
Yes, but many Notebooks no longer have a optical-media drive, and USB is just plain faster. – david6 Nov 30 '15 at 4:51

The ubuntu page mentions that 12.10 can no longer be written on a CD because of its size.

Also, there's no such thing as a "CD iso image", it's just an iso image, so just write it on a DVD and you'll be fine.

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There is also a "mini.iso" network install that will burn to CD and will download the needed packages from the internet.

This will not give you a live CD but will give you a way to install Ubuntu with a CD and your internet.

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There were many talks about the final size for Ubuntu 12.10. The decision was made that the CD size was not capable of handling the amount of packages and ideas that the developers wanted to put in 12.10, like for example Python3 and all other packages related to it. Additionally, since both DVD and USB are more used than common CD (Not all parts of the world, but most of them), the final decision was then made to start building against the DVD and USB sizes, starting with a size around 800MB, which eventually ended around 700MB but still, a couple of megabytes above the biggest size for a common CD disc (Assuming you are using a 650 or 700 size one).

So for 12.10, you can either use a DVD disc or USB (Pen drive, Flash drive...). This gives you 2 benefits:

  1. Faster loading than CD (Since reading a DVD or USB is much faster than a CD)
  2. Faster installation than CD (Same reason as point 1)

Note that this only affects the Desktop version, since the Server version still supports a CD size. Also note that this talk was also mentioned for 12.04 but in that case, they waited for 12.10 instead of applying the size change in 12.04.

In my personal opinion, with the increase in size of many programs, for example games (That even go out to sizes of bluray), and large download installer (Like in steam), or OS updates like the Windows 7 SP1, sizes bigger than 1 GB are more common. So it was just a matter of time before this really needed decision was made, which should help in promote more options for end users (Like me trying to see aptitude implemente again ^^). Hope this answer helps you.

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Ubuntu 12.10 will increase the maximum size of its disc image from 700MB to 800MB, thereby making it too big to fit onto traditional CD-R media.

The news came from Canonical’s Kate Stewart on the Ubuntu Mailing list, who wrote:

"There is no longer a traditional CD sized image, DVD or alternate image, but rather a single 800MB Ubuntu image that can be used from USB or DVD."

Ubuntu Server remains unaffected by the switch.


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I would start by taking out the additional language files such as French, Spanish, ... This usually reduces the size by 100 or so MB. The files can be found in the source root of the disc.

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You can't

live cd option is no longer available for ubuntu, you should use live dvd or usb disk :)

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Where is the DVD ISO for 12.10 ? – Andy Oct 20 '12 at 16:54

If you know someone who knows how to repackage a boot image and modify the config files it can be done, im sick of people who just reply "you cant", it can be done, but like i said, you need someone who knows how to modify the 790mb image (perhaps leaving out a few measly pkgs or drivers you dont need). I have done this in the past...

Oh and there aren't just 2 options, Linux can be installed many ways not just USB and DVDs exist in the real world ya know... the MiniCD (34mb) or even better, if you have a machine already set up with PXE, or have a windows machine handy, you can set it up with TFTPD and set up a pxe boot and get the ubuntu distros for it, i have tried this and it does work.. just google around you'll find lots of different ways to do this. I am currently working on shrinking the build to 700mb because i have 7 machines that need installs and none of them have DVD drives (all cd) and whats worse they are servers and have no way of using my IDE DVDROM cause its SCSI-LVD.. so.. if i ever get this done or find someone else who can do it for me i'll get back to ya, good luck -- hope that helps... (maybe?)

PS: My suggestion for you: Install Ubuntu 12.10 SERVER (comes with no gui) and then install the GUI separately if you know even a little linux this should be sufficient... or heres a link on how to do it if you dont know how..should get you started and hopefully done and on to better things...

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Actually you have two options for the 12.10 standard-image:

  1. USB flashdrive
  2. DVD

To create a USB flashdrive, you can follow these instructions. To create a proper DVD follow the instructions here.


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Where is the DVD ISO for 12.10 ? I have downloaded 12.04 DVD iso. It looks like the 12.10 iso is only for 800Meg CD's – Andy Oct 20 '12 at 16:56
There isn't an iso explicitly labeled as DVD. As you stated, 800 MB don't fit on a CD. So the only way to get it onto a roundly shaped medium is to burn it on DVD. It does not matter how big the image is. A DVD can hold data from 1MB to 4GB. – cauon Oct 20 '12 at 17:11
Hmmmm, well its labled DVD for 12.04.1 "ubuntu-12.04.1-dvd-i386.iso". When I tried to burn the 700Meg plus iso nero rejected the 700Meg CD as too small and the dvd as unsuitable also. I will have to try this again. Thanks. – Andy Oct 20 '12 at 17:30
ok, got both 12.10 iso and 12.04.1 iso burned onto DVD. Problem was changing the burning software Nero to DVD from CD. It might help others to put into the docs that the latest image can only fit onto USB Stick, DVD or special 800Meg CD in the case of 12.10. or maybe it does state that and I missed it. Thanks again everyone for the help. – Andy Oct 21 '12 at 1:24

You could use the minimal cd iso which you can download from here. It's only 34MB so it's able to fit on a CD.

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You could try installing Ubuntu 12.04 via CD and then upgrading it immediately after installation to 12.10.

To do that, check out this article on OMG!Ubuntu!

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Clean install is always recommended. – hakermania Nov 25 '12 at 10:05
If they do not have access to a USB, and can only use a CD, this might be the only way for them to get 12.10. It's only a workaround for people constrained by difficult technical circumstances. I agree though that it is not optimal. – Simon Hoare Nov 25 '12 at 10:24

Yeah,as david6 said, you can use a Flash USB device.uncompress the files in the iso to you USB device and boot from the USB device just like your CD.(you can use ultraISO to uncompress the iso to your usb device)

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Your two alternatives are either to burn a DVD or to make an Ubuntu live USB. The instructions for making an Ubuntu live USB follow.

In order to make an Ubuntu live USB for installing Ubuntu, use UNetbootin (Windows<=Windows 7/Mac/Linux/Ubuntu Software Center). The flash drive you use should be 1GB or larger (2GB or larger for Ubuntu 14.04 and onward), plus whatever additional space on the USB drive you want to use for persistent file storage, and formatted to FAT32. UNetbootin will automatically format the USB flash drive to FAT32 if it is not already formatted to FAT32. In either case the formatting procedure will delete all of the files that are already on the flash drive.

It is very important to verify that the device that you are installing the Ubuntu live USB to is indeed your flash drive, so that you don't overwrite any of your system or personal files which may make your operating system unbootable. In Ubuntu you can find the device name of the flash drive using Disk Utility (or Disks if you are using Ubuntu 13.04, 13.10 or 14.04 and onward). In the picture below the name of the flash drive is /dev/sdc1 where /dev/sdc is the device name of the flash drive and the 1 after sdc means UNetbootin will install the Ubuntu live USB on the first partition on that device.

enter image description here

The Ubuntu live USB flash drive that you make this way will be bootable from PC computers. In order to enable your computer to boot from the USB flash drive, you must enter your BIOS menu by pressing one of these keys, usually: Delete, F2 or F10 as soon as the motherboard splash screen appears when the computer is booting. In the BIOS menu, you need to change the boot order so that the USB flash drive, which is usually called USB-HDD in newer computers, is the first entry in the boot sequence, and then save your new BIOS settings and exit the BIOS setup.

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One potential workaround, if you don't have a USB stick or a DVD burner, is to copy the image to a hard drive partition and boot from that (dd if=ubuntu12.10.iso of=/dev/sda5, for instance, if you have an unused partition at /dev/sda5). This limits your partitioning options during setup, of course.

If you use your swap partition for this, you might save yourself a bit of trouble, since swap is the easiest thing to deal with after install.

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Try using a USB, as other had stated. You can get one for pretty cheap from your local Staples or other such market.

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I know this is an old post but I am going to try an answer anyway.

There are some mini.iso files that have been created that are anywhere from 27MB ~ 40MB in size. After you have created the CD / USB media with one, it boots up and starts to download the required packages. Recommended to do this with a hard wired connection (I don't think I was able to get it to connect wireless until after the installation).

After the required installation packages are downloaded, it then asks you all the packages you want installed. It even has the ability to install the GNOME Desktop without Unity, and vice versa.

The files can be found here.

Hope this helps!

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