[mythtv-users] how to reinstall from scratch without losing existing recordings?

[UB40D]

I seem to be having no luck in bringing mysql back to life (see thread "How
to repair mysql?"), which has made me myth-less for a couple of weeks now.

The prospect of reinstalling the whole of mythbuntu from zero on an empty
partition is becoming increasingly likely.

The database backups I have in /var/lib/mythtv/db_backups are not as up to
date as I'd like but on the other hand I do have a right-up-to-date copy of
the whole of /var, thus including the database itself. The actual
recordings are on other partitions or physical drives.

If I make myself a new / and a new /var and reinstall mythbuntu there, and
then mount the recordings partitions somewhere accessible, can I just
overwrite /var/lib/mysql/mythconverg with the equivalent from my backup or
do I have to do something more elaborate?
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