Upgrading Debian version 9 to version 10

[mboyle]

Hello,
I need to upgrade Debian version 9 to version 10 at least before I can upgrade the current software that is installed on the machine.
The upgrade software needs a minimum of version 10 to run. If possible can I upgrade to 12? I have tried everything with no luck.

I need help

[sunrat]

Read the Release Notes section on upgrading - https://www.debian.org/releases/buster/ ... ng.en.html
To upgrade to Debian 12 you need to upgrade each release individually 9 > 10 > 11 > 12. There are similar release notes for each version.
Personally I would just backup everything including a list of installed software and do a new install of 12.

To restore the installed packages in a newly installed Debian, first make a list of currently installed ones:

Code: Select all

dpkg --get-selections > package-list.txt

Then to reinstall in your new system, as root do:

Code: Select all

dpkg --set-selections < package-list.txt
apt-get dselect-upgrade

Some Buster packages will not be available in newer versions so you may have to resolve that manually.

[Uptorn]

The learning experience one might get from upgrading through those versions may be worth consideration. That is, if you have some free time on your hands.

[mboyle]

I have just found out that the updated software only supports version 10.
So I don't need to go to 12.

The steps that I have found on the internet have not worked for me at all.

[Uptorn]

What software is that which requires Debian 10?

[mboyle]

it is called Caldera