Here is how to access the grub recovery menu, to use the Root Prompt:
To enter the Recovery Menu on Zorin OS if using Legacy (MBR) boot, you can hold or tap the Left Shift key at boot to be offered the Advanced Options for Zorin Grub menu.
If using EFI Boot, then tap the esc key vigorously. Some users report that the tab key worked, instead.
You might think that this is pretty straight-forward. However...
Some BIOS are programmed to ignore a key being held down, as it is assumed to be pressed by accident or a stuck key. Cat on keyboard, coffee... The BIOS prog…
Once there, follow these steps to try the nomodeset
grub parameter. That it works on the fallbak Try Zorin
suggests it may be a modesetting issue on the bare metal install.
There may be times that a user must add a specialized grub parameter in order to overcome an issue.
The purpose of this guide is not to provide parameters, as that would be a case by case basis. It is to provide a guide on how to add one.
To add a parameter, in a terminal (TTY, Recovery Prompt or Terminal Emulator) run:
sudo nano /etc/default/grub
Arrow key down to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" and place your parameter within the quotation tags. For example if you are adding th…