How To Install sicherboot on Ubuntu 20.04
Introduction
In this tutorial we learn how to install sicherboot
on Ubuntu 20.04.
What is sicherboot
sicherboot is:
sicher*boot manages kernels and systemd-boot on a secure boot machine. It installs kernels and systemd-boot, generates signing keys to enroll in the machine, and signs the kernels and the bootloader with it.
Keys are generated in /etc/sicherboot/keys, readable only to root. The private keys are unencrypted in the default configuration, but that can be changed, see /etc/sicherboot/sicherboot.conf after installing.
This package diverts the /etc/kernel/postinst.d/dracut file and replace it with its own file that calls the diverted one before running sicherboot, as dracut does not support any form of hooks. dpkg is not entirely happy with that and asks you if you want to replace a “deleted” dracut conffile - answer yes.
There are three methods to install sicherboot
on Ubuntu 20.04. We can use apt-get
, apt
and aptitude
. In the following sections we will describe each method. You can choose one of them.
Install sicherboot Using apt-get
Update apt database with apt-get
using the following command.
sudo apt-get update
After updating apt database, We can install sicherboot
using apt-get
by running the following command:
sudo apt-get -y install sicherboot
Install sicherboot Using apt
Update apt database with apt
using the following command.
sudo apt update
After updating apt database, We can install sicherboot
using apt
by running the following command:
sudo apt -y install sicherboot
Install sicherboot Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude
using the following command.
sudo aptitude update
After updating apt database, We can install sicherboot
using aptitude
by running the following command:
sudo aptitude -y install sicherboot
How To Uninstall sicherboot on Ubuntu 20.04
To uninstall only the sicherboot
package we can use the following command:
sudo apt-get remove sicherboot
Uninstall sicherboot And Its Dependencies
To uninstall sicherboot
and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:
sudo apt-get -y autoremove sicherboot
Remove sicherboot Configurations and Data
To remove sicherboot
configuration and data from Ubuntu 20.04 we can use the following command:
sudo apt-get -y purge sicherboot
Remove sicherboot configuration, data, and all of its dependencies
We can use the following command to remove sicherboot
configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge sicherboot
References
Summary
In this tutorial we learn how to install sicherboot
package on Ubuntu 20.04 using different package management tools: apt
, apt-get
and aptitude
.