Linux tutorials, system administration, web hosting, programming

Debian 11 (Bullseye) minimal server installation

botond published 2022. 04. 04., h - 19:52 time
In this description we will install a Debian 11 (Bullseye) minimal server, which consists of the basic Debian 11 system and some basic program installation and configuration. The server will later serve as a basis for additional server installations. On this page we will install the base system.

How To Fix "This PC can't run Windows 11" Error When You Install Windows 11 On VirtualBox

botond published March 2022, 03, Thu - 24:21 time
VirtualBox can be installed on a variety of operating systems, including all versions of Windows. However, there are still issues with Windows 11. The current version of Virtualbox (6.1) theoretically supports Windows 11, but there are problems during installation. This troubleshooter resolves this issue so that you can install the current latest version of Windows, 11, without any problems.

Dual boot: Installing Windows 11 and Ubuntu 21.10 (Impish Indri) operating systems in UEFI mode on two partitions on a hard disk

botond published 2022/03/19, Sat - 00:30 time
In this dual boot description, we first install a Windows 11 operating system and then an instance of Ubuntu 21.10 (Impish Indri) Linux. It is installed on a 64-bit UEFI-based machine, where 64-bit systems are mounted on two partitions on a hard disk with a single GPT partitioning scheme. On this page, we'll review the prerequisites and then install Windows 11.

How to configure VirtualBox for graphical desktop operating systems

botond published 2022/03/11, p - 13:21 time
Thanks to virtualization, we have the ability to run another operating system within our computer’s existing operating system. This can be used for a variety of purposes, in this case I will use the free VirtualBox virtualization program for the installation, in which I will install the guest operating systems that are the subject of the tutorials. In this description, in VirtualBox running on a Linux host, I create a guest machine for Linux or Windows operating systems with a graphical desktop environment that requires more hardware resources - and therefore different settings in some places - than the previous version for Linux base systems.

How to upgrade your perfect Debian9 (Stretch) based server to Debian 10 (Buster)

botond published 2022/01/22, Sat - 23:01 time
The operating system running on our Debian-based web servers will become obsolete over time, so over time it will be necessary to completely upgrade the distribution. In this description, we will perform a complete upgrade of a Debian 9 (Stretch) web server to Debian 10 (Buster). There are many features on the server that will also be updated. On the first page of this description, we will perform the pre-upgrade steps to prepare your system for a secure upgrade.

What to do if you update the "This must be accepted explicitly before updates for this repository can be applied. See apt-secure (8) manpage for details." do we get an error message?

botond published 2022/01/11, k - 13:22 time
If there is a major change to your Debian system - so you don't just need to upgrade one or two sub-versions - you will get an error message during a smooth upgrade:
This must be accepted explicitly before updates for this repository can be applied. See apt-secure (8) manpage for details.
This troubleshooter will fix this.

What to do if your VirtualBox does not start the installation ISO image files in EFI mode

botond published 2021/10/24, v - 18:40 time
If you frequently use virtual machines with VirtualBox, it is a more convenient and time-saving solution if you do not create and configure a new virtual machine for each installation, but use the existing ones. In some cases, this can cause problems, such as when you try to start your installer in EFI mode, but it does not want to start. In this short little troubleshooter, we will look at how to start ISO installers on EFI mode virtual machines.

Installing Debian 11 (Bullseye) in UEFI mode with the KDE Plasma desktop environment and the Calamares installer

botond published Jan. 2021, 10, 20:18 p.m. time
Debian 11 (Bullseye) was released on August 2021, 14, and is available in a variety of desktop environments. In this description, we will install the desktop version of KDE Plasma, using the Calamares installer in the Live version, which offers a convenient, clean and simplified installation process. This installation is performed on a 64-bit UEFI machine where the Debian 11 (Bullseye) operating system is mounted on a hard disk with a GPT partitioning scheme.