We have a few Debian 5 systems that are still using /dev/hda in the fstab. We'd like to covert them to using UUIDs. This is supposed to be done automatically via the "linux-base" package (postinst), but for some reason it's not kicking in (perhaps someone already ran it and it saved some state somewhere to not do it).
While it's certainly possible to change over to UUIDs by manually editing a bunch of files, it'd be useful to script it somehow. Various incantations of debconf and debconf-set-selections don't seem to work.
So basically, how can one invoke the Debian-provided script/s that do/es all the UUID conversions?