I have a fresh install of Ubuntu 19.10(UEFI).
A) I can’t boot to Ubuntu after grub selection. I can't enter Ubuntu to have bash to disable it. Are there any ideas?
B) Also, since Ubuntu is the only OS on my PC, why do I need GRUB?
I have a fresh install of Ubuntu 19.10(UEFI).
A) I can’t boot to Ubuntu after grub selection. I can't enter Ubuntu to have bash to disable it. Are there any ideas?
B) Also, since Ubuntu is the only OS on my PC, why do I need GRUB?
Let me recommend the rEFInd boot manager. You can install it and it will find the various operating systems and let you boot them. At least for me, on multiple machines, this "just works."
rEFInd page here: https://www.rodsbooks.com/refind/
Installation instructions here: https://www.rodsbooks.com/refind/installing.html
Since it is a fresh install, it wouldn't hurt to do a fresh install again, would it? Anyway, if that doesn't work or isn't an option, you can try Rescatux.