Brain's Workbench
You need to have a console access for running this operation.
1. Inside java or HTML5 console, please reboot your server and wait for the GRUB menu
2. Inside the GRUB menu select your first entry and press “E” key to edit.
3. Find a line with ro and change it to rw
Step 1: Reboot your Ubuntu 20.04 LTS Operating System and load the GRUB menu by holding the Shift Key on Keyboard
The first step is to start your computer machine and keep pressing the shift button on your keyboard until the GRUB menu appears, as shown in the picture below:
Step 2: Press ‘e’ to edit the commands
Now, select the boot Operating system, which is Ubuntu in our case, and press the ‘e’ key on your keyboard to edit some commands. By doing so, we can load the root shell Command prompt. Pressing the ‘e’ key on your keyboard allows you to have an edit screen, as shown in the picture below:
Boot up the machine, and after the BIOS screen, hold down the left Shift key. You will then be prompted by a menu that looks something like this:
Hit the down arrow until you select the 2nd entry from the top (the one with the recovery mode in the description) and then hit Enter.