Ubuntu 20.04 Black Screen Before Login Recovery Mode Guide

Fixing System

2. 2. Booting in Recovery Mode

   Then to Boot Ubuntu in Recovery Mode
   Simply try to hold down the “Esc” or the “Shift” Key.
   And then choose “Advanced Options” > “Recovery Mode“:

   
   
   
   

3. 3. Fixing Ubuntu

   So now to try Recovering Ubuntu
   First, you have to enable Networking.
   So navigate with your Keyboard Down Arrow to choose “Enable networking“:

   
   

   And Confirm with “Yes”:

   
   

   Then you have to select “Drop to root shell prompt“:

   
   

   Then to start Debugging try a first a simple recovery with:

   sudo dpkg --configure -a

   Or else again:

   sudo apt -f install

   Possibly, remove the offendig Packages use:

   sudo apt purge [MYPACK]

   Next to reboot:

   sudo reboot

   If the Issue is still there then try to follow the Recovering Guide to the Next Step…

4. 4. Fixing Disk Errors

   How to Fix Disk Errors Even if Ubuntu Non Bootable

   Restoring Ubuntu Disk Guide

   Repairing Ubuntu Disk

So Now I am truly Happy if My Guide could Help you to Recovery Ubuntu 20.04 Focal!