Quote Originally Posted by QIII View Post

Did you try a bare metal installation before adding the potentially problematic issue of VBox?
Yes, i tried to install Kubuntu 20 on my laptop HP Elitebook 8560w and every time i tried to encrypt my home and root partitions installer crashes. Then i tried to install it on virtualbox and installer crashes every time again. I prefer to use Kubuntu because i am used to apt package manager and deb packages, but if i can't encrypt my installation i have to look for other distro that uses kde desktop.