How big is Kali Linux download?
Kali Linux requires: A minimum of 20GB hard disk space for installation depending on the version, Version 2020.2 requires at least 20GB.
Is Kali Linux good for old PC?
You should be able to use Kali Linux on newer hardware with UEFI and older systems with BIOS. Our i386 images, by default use a PAE kernel, so you can run them on systems with over 4 GB of RAM. In our example, we will be installing Kali Linux in a fresh guest VM, without any existing operating systems pre-installed.