Hi,
B.M. wrote:
> Since all our other computers are happily running Debian, I'd like to replace
> this Ubuntu by Debian Testing (later Bookworm). I've already decided to run it
> on a single btrfs partition and learn something about subvolumes... I assume
> the machine should work well - but who knows? How would you proceed?
>
[...]
> b) replace Ubuntu by Debian, fiddling around issues if there are any later
[...]
Yes. This would be my way.
I would replace the include NVMe by larger, similar one, and install Debian
Bullseye on it.
Because this URL confirms, that Debian Bullseye is working without issues, if
you can have access to the Linux firmware, like by USB stick.
https://wiki.debian.org/InstallingDebianOn/Dell/Precision%203570%20%28bullseye%29
Therefore I would replace the NVMe by a similar, larger one. Have a look into
the "Precision 3570 Setup und technische Daten" document, which can be found a
the Dell website, for all the technical details for the NVMe (table 13 + 14).
https://dl.dell.com/content/manual56242967-precision-3570-setup-und-technische-daten.pdf?language=de-de&ps=true
Then replace it, like it is described in the Precision 3570 Service handbook,
found again at the Dell website.
https://dl.dell.com/content/manual55813596-precision-3570-servicehandbuch.pdf?language=de-de&ps=true
If you fear, that you will still need the Ubuntu 22.04 LTS, and need the access
to it, install old NVMe into a NVMe case with an external USB connection.
But, as said above, Debian Bullseye should work without any adaption.
Good luck.
Regards,
Klaus.
--
Klaus Singvogel
GnuPG-Key-ID: 1024R/5068792D 1994-06-27
