Comments on How to Upgrade from Debian 9 to Debian 10

Debian 10, codenamed "Buster," is the latest version of the popular Linux distribution. Released in July 2019, Debian 10 provides a wealth of new features and improvements over previous versions. In this article, I will show you how to upgrade from Debian 9 to the new Debian 10 in a few easy steps.

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By: Florent Lartet

Hello,

there are some unexpected "bullseye" on this page, be careful.

By: ironjohn

That cost me a couple of hours.  Specifically, the fourth of the sources to be added to sources.list is given above as: 

deb http://security.debian.org/debian-security bullseye-security main

Notice the 'bullseye' in that line.  That's not the only problem with it.  In fact, it should be more like this:

deb http://security.debian.org/debian-security buster/updates main contrib non-free

 

The results of unknowingly using that bullseye source was about 170 packages that could not be upgraded, removed, or repaired.  Lots of unmet requirement errors.  I restored to a checkpoint twice before realizing what happened.