in my pc there is no uefi this is older pc with e8600
i instal clear debian bookworm without any issus
linuxcnc need conection to the internet when is installing?
That is a bit to old, but should be usable, so if you can install Debian BookWorm, open a terminal:
sudo apt update
sudo apt upgrade
sudo apt install linuxcnc-uspace
That will install everything needed.
