On 22 Apr 2024 09:00 -0400, from s.molnar@sbcglobal.net (Stephen P.
Molnar):
I downloaded and ran the 512 check sum on a copy of
Debian-12.5.0-amd64-DVD-1.iso and ran the Graphical Install mode on
the 1.0 TD SSD on my Computer. The installation went smoothly
without any warning or error messages.
I logged in as root to set up the Desktop and, much to my surprise,
found that my previous Desktop configuration was still there!!???
This was also the case when I logged in user!!!???
It sounds to me like you intended to do a clean reinstall, but the
obvious question given the observed behavior is: did you actually do
that? For example, did you actually reformat (create file systems
anew)?
My guess would be that you installed _on top of_ the previous
installation rather than wiping and replacing it; so I'd start with
seeing if that hypothesis can be ruled out. An easy way might be to
check /var/cache/apt/archives and look for old linux-image .deb files.
If it's a freshly installed system, there should only be one or two,
likely at 6.1.0-20 for Bookworm. If you see any kernel older than
6.1.0-18, those are remnants from a previous installation (Debian 12.5
shipped with kernel ABI 6.1.0-18
<https://www.debian.org/News/2024/20240210>.)