[Dovecot] moving 1.2.13 system to another hard drive

Hi,

I am not very experienced with Dovecot (1,2,13) installed on Debian sid.

I have just set up a new system on a new hard drive on the same computer. fetchmail is correctly putting mail in /var/mail/<username>. I have copied my entire Maildir directory from the old hard drive. I have made what changes I understood to dovecot.conf.

Dovecot was working on the other drive even though I'm not completely sure how I got it working before.

Any ideas for debugging this certainly simple problem for some of you.

TIA,

Paul Scott