Direct upgrades from N to N+2 is not supported. You ought to have first upgraded to Bullseye then to Bookworm. If you have a backup of the Buster image you could go that route and it should work, unless you have some "non-standard" things installed which would be documented in both the Bullseye and Bookworm release notes.
I tried this in the past and it blew up spectacularly...then I read the documentation. On Sat, Dec 28, 2024 at 1:07 PM mick.crane <[email protected]> wrote: > a couple of months ago I updated Debian from Buster to Bookworm and my > roundcube/dovecot installation stopped working. > Apache just presented a directory listing and my index.html link to the > roundcube install displayed a config file. > I thought I should get around to fixing it but put it off. > Just now I thought I'd get a raspberry Pi and reinstall everything on > that as they are smaller things. > I'll just look one more time > and... it's working. > I didn't do anything, haven't rebooted it. > What could that be? > Browser cache, DNS sorting itself out, some automatic update? > It is disturbing it just started working on its own. > mick > > -- Regards, John Boxall

