Terminal not opening on Ubuntu on Virtual box . Full instruction to install Ubuntu .

Note: 1. at 8:46, hit CTRL ALT F3 to enter that mode, hit ALT F1 to escape. 2. For rush time, you can watch from 9:20 for the solution. Hope this video helpful. 3. You can try this solution with Ubuntu 20. “ Because ’ Auto mode’ of Virtual box will skip and auto-set the values which are not fixed/ suitable with your machine. So the solution is installing/ setting up manually. How? You can follow other instructions on the internet. But I think this solution is the best in my case. So simple - Follow my video.