I received the prompt to upgrade my Dell Vostro 1720 Laptop from 20.04 to 22.04 but nothing happens when I choose "Yes" to upgrade. I've tried using the terminal to upgrade by running this in the terminal:
sudo apt update && sudo apt upgrade
I get this response:
sudo: /etc/sudoers is world writable
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin
I get the same response when I try to run
sudo apt update
sudo apt upgrade
I have tried every thing but keep getting this same response.
Next, I tried installing it from a usb, but when I select to boot from the USB, the screen displays, "GRUB" then goes black to a blinking line cursor. So I am completely unable to bring up any way to install.
Is there something I'm missing?
etc/sudoers
withchmod
ando-w
. That's the only way to fix that error. The sudoers file is somehow made world writable and that is not permitted.