Here's a final prep checklist before we start the 6.13 upgrade:
1. Run
cronmanually a final time before the upgrade.2. Check your recent log entries one final time at Administer | Logs | Recent log entries before upgrading.
3. Make a list of all of your contributed modules so that you have a module checklist to work from during the upgrade process. Here is our list of contributed modules for the site that we'll need to update once we upgrade Drupal core:
Administration Menu
CCK
Development (Devel)
Imagecache
FCKEditor
IMCE
Lightbox2
Panels
Webform
jQuery plugins
Views
It's also good practice to print out the list of your modules before doing the upgrade, so that you have the printout as a reference to fall back on when you're downloading your 6.x versions.
Access your Modules list and uncheck all contributed modules to disable them in advance of the upgrade. You do not need to uninstall any of the modules (apart from the Drupal Update Status module that we already removed), but it's a good idea to disable all contributed modules.
Save your module configuration once you have disabled all the contributed modules.
Before upgrading it's a good idea to disable your custom theme (in this case we are using a sub-theme of Zen called 'Apollo'). Enable the Garland default Drupal theme (the one you're currently using on the admin portions of the site) for your entire site during the upgrade process. We're going to be deleting the entire Zen theme in order to upgrade it to the 6.x version of Zen, so let's disable it first.
1. Go to the Administer | Site building | Themes admin list and disable the Apollo theme.
2. Check the Default radio button next to the Garland theme to make it your default system theme for the upgrade process.
3. Save configuration.