Morning all
I don't think Wizard's instruction in
post #30 will do anything further for you, Mike.
Agreed, stan.
Mike when you are up to it, please give us the content of your file /etc/default/grub
You can use
to display the content on Terminal without having to enter the file.
Copy and paste the output into the Codes fields stan has explained above.
It may be a simple matter of adjusting a line or two to get the Grub Menu (if available), but if that does not work, we can look at the content of
/etc/grub.d/30_os-prober
... which a lot of people are unaware can actually countermand/override /etc/default/grub content. That is just speculation at the moment.
To edit the file, you can either use Nano as stan has described above (I use it all the time), which runs under its own shell environment in Terminal, or else you can use a GUI (desktop) utility text editor, which for Ubuntu is Gedit.
NANO
With Nano, you navigate using your arrow direction keys, which can seem cumbersome.
If you use an option -m, such as
Code:
sudo nano -m /etc/default/grub
it enables the use of the mouse to click at any point where you want to insert or delete text.
When you have finished editing, use Ctrl-x to start the save and exit. It will ask you if you want to save the Modified Buffer (uppercase Y to confirm), then display the name of the file, that you want to make the changes to (press Enter) and it closes returning you to the usual prompt.
GEDIT
(at least) 2 ways of using this: pkexec, and an "admin" command. Either of these will launch Gedit on the desktop, for you to edit and save a file. However with pkexec, you will likely need to create a policy file, which is a PITA (pain in where the sun don't shine).
So admin (you may need to enter your password twice):
Code:
gedit admin:///etc/default/grub
(The admin option can also be used in a File Browser that does not support the option to "open as root" or "open as administrator")
There is a good article on this, including two deprecated commands gksu and gksudo, here
https://itsfoss.com/gksu-replacement-ubuntu/comment-page-7/
but it does not explain the policy kit for pkexec.
Hope this is all not too confusing.
See you later.
Wizard