I have an old laptop with Ubuntu 20.04 installed.I tried to install Lubuntu in a dual boot system but Lubuntu goes as far as what looks like smoke rising on the screen and goes no further.I left it running in that state and timed it for about 20 minutes but nothing changed.The Lubuntu install had already been running for a while.At the start I selected "run alongside another instilation"
So,what is happening.
I want to run Lubuntu alongside Ubuntu with a view to wiping Ubuntu and running Lubuntu only,as Ubuntu is really slow on this old PC.