Category: Virtualization / KVM / VirtualBox / xenserver

GNU Linux Debian 11 (bullseye) – how to install virtualbox 6.1

lsb_release -a; # tested with Distributor ID: Debian Description: Debian GNU/Linux 11 (bullseye) Release: 11 Codename: bullseye su – root wget sha512sum 7e977fde8a2fc370d7df24f761e75eced308ea17037113db877bd799abec4a3a9b6324fcbfda2d2a67d63fbe23b822abbd36ab0f9af4fc5c352df04a97dbe550 # needs to be dpkg installed manually # install requirements apt update && apt upgrade apt […]

GNU Linux How To – kvm qemu – start – clone (multiple disks) – snapshot – restore-revert – delete – shutdown all vms – start all vms with keyword in name – snapshot all vms – add remove disks

how to setup kvm on Debian: hostnamectl; # tested on Static hostname: lenovo Operating System: Debian GNU/Linux 10 (buster) Kernel: Linux 4.19.0-17-amd64 Architecture: x86-64 hostnamectl; # also on Operating System: Debian GNU/Linux 12 (bookworm) Kernel: Linux 6.1.0-17-amd64 # with virsh […]

GNU Linux Debian 10/11/Ubuntu – how to install kvm virtualization (qemu) – basic virsh commands – kvm cheat sheed – howto workaround virt-manager “emulator may not have search permissions for the path”

BACKGROUND INFO: how does kvm use qemu? KVM (Kernel-based Virtual Machine) is a virtualization solution for Linux on x86 hardware. It allows running multiple virtual machines (VMs) on a GNU Linux host by leveraging hardware virtualization extensions such as Intel […]

GNU Linux – basic harddisks benchmarks with dd and fio (ssds  KINGSTON SKC600512G vs Samsung SSD 850 PRO vs Samsung SSD 860 EVO vs Samsung SSD 870 EVO 1TB) – ntfs vs ext4 – how fast are virtual harddisks?
13.11.2020 update 2022: next to the good old (non-destructive if used correctly) “dd” is still the way to go for benchmarking harddisks under GNU Linux. if there is a desktop: “gnome-disk-utility“ fio as always: UNIX: KISS! KEEP IT SIMPLE!) […]

Windows (7) automatic reboot every 3 days at midnight taskschd.msc

sometimes one wants to restart a windows vm every x days – to clean up RAM and Co. run task scheduler “Aufgabenplanung” %windir%\system32\taskschd.msc /s File/Datei -> New/Neu -> Basic Task/Einfache Aufgabe select or copy paste: %SystemRoot%\System32\shutdown.exe one has to scroll […]

Debian 9.8 “stretch” setup of VirtualBox 6.0 with Cinnamon Desktop

# setup log of VirtualBox Graphical User Interface Version 6.0.10 r132072 (Qt5.7.1) # on Debian 9.8 with Cinnamon Desktop # go into software repo user@debian98:~$ cd /software/ # download latest version of software user@debian98:/software$ wget –2019-08-03 14:36:05– Resolving […]