by Howard Miller.
Regarding the legacy files, what error (if any) are you getting.
If it's the one I think it might be it's usually caused by this...
- Try to upgrade from 1.9 to 2.x
- Upgrade fails for some reason
- You restore the 1.9 database but fail to restore the 1.9 moodledata files
- Try to upgrade again and it completes
Your site runs but you have no access to your files. This is because the file area upgrade was incomplete. The only answer is to *completely* restore your 1.9 site and start again.