How do I upgrade Ubuntu OS from the CD.

Liam Proven lproven at
Thu Jul 29 14:36:50 UTC 2010

On 29 July 2010 09:35, R Wall <maillist at> wrote:
> Hi everyone,
> I have an old version of Ubuntu installed. When I went to up grade to Ubuntu
> 10.04 LTS I found that the Internet connection would drop out and I would
> have to start again. After doing this two times I ordered the CD.
> But how do I upgrade Ubuntu OS from the CD without having to set up the
> wireless network connection etc again. I can start the CD and Try or Install
> Ubuntu OS, but Install may overwrite the wireless network etc.
> Thanks in advance for your help,

Which version do you have?

You can only upgrade to 10.04 from 9.10 or 8.04 (the previous LTS
release.) Nothing else. For any other versions, either go through all
the intermediate steps (e.g. 8.10 -> 9.04 -> 9.10 -> 10.04) or do a
fresh reinstall.

If you are running 32-bit, you can only upgrade to 32-bit, and
similarly, only 64-to-64. You can't go 32-to-64 or 64-to-32.

To upgrade from CD, you must be using the Alternate Install CD. Insert
it into your running system and follow the instructions that should
appear on your screen.

If the upgrade dialog is not displayed for any reason, you may also
run the following command using Alt+F2: gksu "sh /cdrom/cdromupgrade"

Liam Proven • Profile & links:
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