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Upgrading Joomla Legacy version 1.0 to the latest version of Joomla

Is it possible to somehow upgrade Joomla version 1.0 to the latest version of Joomla (v2.5) ?

If so, what is the process?  

Or am I better off not even bothering to try to migrate over all the data?

I'm assuming that the table structures are completely different, and that data migration would be a nightmare.  

Or has someone else already created a upgrade / data migration script for this that I could download from somewhere?

- Yvan
JoomlaPHPContent Management

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Rowby Goren

8/22/2022 - Mon

You will have to migrate to 1.5 (http://docs.joomla.org/Migrating_from_1.0.x_to_1.5_Stable) then 1.5 can be migrated to 2.5.  (http://docs.joomla.org/Migrating_from_Joomla_1.5_to_Joomla_2.5)  Think "migration" rather than "upgrade".

I have had mixed results.  1 complex site migrated without a problem then another simple site failed every time I tried it.  Depending on the amount of content you may want to start from scratch and make sure your data is clean and consistent before importing the pages.

Hope this helps

Rowby Goren

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Rowby Goren

Do keep in mind that you will most likely have to get a new template, since your 1.0 template won't work in 2.5.

And you will have to replace your old 1.0  extensions and modules and plug-ins with new ones that will work in 2.5.   This should not be a problem (just work!).  The migrate programs mainly rebuild your articles, etc.

That's why it might be easier to just do, as I suggested -- if your site is simple -- build a new 2.5 site on another server, and then copy and paste the HTML from your individual articles into the new 2.5 site.


Yeah -- we've actually decided to dump all of the existing data and to start fresh with a new v2.5 installation.  Thanks for your help!

- Yvan
Your help has saved me hundreds of hours of internet surfing.
Rowby Goren

Hi Yvan

I am certain you made the best choice.

Don't hesitate to post any questions you may have here.  There are lots of us here who will be happy to help guide you through the process.

Jooma 2.5 is an excellent version to work with.