Hardware is x86-PC (BIOS), Lenovo X220 Laptop with i5-CPU, 32 GB RAM, 500 GB SATA-SSD with Kubuntu 20.04 pre-installed. Laptop boots without problems when starting Kubuntu so i guess no hardware problems here.
Do you have any ideas how i can solve this problem and get started using DietPi?
I downloaded and unpacked the archive with Ark on another Kubuntu machine (Home-PC). Install is from an USB-Stick which was prepared/made bootable with Ventoy (www.ventoy.net).
Plan was to install DietPi on the SSD on my X220-Laptop.