I have tried to install Ubuntu 18.04.4 LTS and Ubuntu 20.04 LTS, but met the same error.
When installing stock at "grub-install", the whole system is not responding, mouse and keyboard can not use.
The PC to install Ubuntu is HP Z2 G4 Workstation. Only one SSD disk is connected, i want to install only Ubuntu. Cause i have tried several times, the last time, i following carefully with this manual partition creation procedure. But doesn't work either. I create bootable usb stick with rufus, tried both GPT/MBR partition schema.
I have before successful installed the Ubuntu 16.04 on the same machine, same disk.
What is the solution, thanks.