I have made a change to GRUB2 bootloader in etc/default/grub.
Now I need to run 'update grub' for the change to take effect.
However, the 'update grub' command on the terminal is giving this error message:
Can someone please explain why this command is no longer working?

I've had to make a change to grub because I tried to install a new distro which meant I had to alter grub.
The install wasn't successful so I deleted the grub file and then re-installed it.
The re-installed grub needs a change so I can get sound on my pc.
However, I can't add these changes because the 'update grub' command doesn't work.

I've checked the grub file with another debian distro and they are both the same.
So now I don't know if I need to check if a different grub file is the problem or anything else.
Can someone help?

Type in update and hit the <Tab> key twice (quickly).
See what the command should have been.

1 members found this post helpful.

1 members found this post helpful.

That's a nice tool. I'll have to try and remember it. Thank you.

The correct option on the long list hasn't appeared unfortunately.

Thank you, this has sorted me out!
It's not it's The guy who created grub doesn't seem to have followed the linux syntax rules for new commands.
That's just great.

You're welcome

The `update-grub` command is actually just a script which executes `grub-mkconfig -o /boot/grub/grub.cfg` (`grub-mkconfig` is also a script).

Blame the Debian/Ubuntu devs - this is not part of grub.

Thanks, that's good to know.

The problem with these linux developers is they don't follow convention - they like to do their own thing and make everything complicated.

Then private companies come in, make something like Ubuntu and run away with all the customers!

All Microsoft has to do is make a Debian-clone, make it simple and get people to pay for it!
It will sell like hot cakes!