I plan to bring a Buster machine which has been shut down for quite a while online again. Before connecting it to the internet, I looked for instructions on how to add the LTS security updates entries to sources.list.
My first search brought me to wiki.debian.org, where I landed on the /LTS/Using page, but it contained no Buster-specific instructions. After more searches, I saw numerous posts containing messages like these, and I decided to double check the procedure to obtain LTS updates. E: The repository 'http://deb.debian.org/debian buster/updates Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. Seeing the above, I decided to ask here for the latest info. Thanks!