I've tried several times now to get my site onto Drupal 7, and i'm now at my wits end. My site's simple enough yet will not migrate successfully.
So, the starting point is the latest version of 6. A few contributed modules (Views, Date etc) but a very vanilla site with an out of the box Garland theme. I performed the following steps:
- Placed site into maintenance mode
- Disabled all contributed modules
- Cleared the cache
- Removed the entire site except for the Sites directory and its contents
- Removed the code for the D6 contributed modules
- Copied over Drupal 7.2
- Ran update.php and watched 123 updates applied, apparently successfully
- Come out of maintenance mode
The first thing I notice is a badly mangled screen layout, with the menus along the left sidebar but above any content. So this version of Garland (or the way its blocks are working) differs from Drupal 6 considerably.
Ok, let's use Bartik, it's more Drupal 7 like. This now looks much better. Click on the Administrator menu link - nothing seems to happen.
Enable the Overlay module. Click again on Administer. Now get the infamous 'you have no administrative items'. Enable the toolbar - it's empty except for the Home icon.