[SOLVED] Update Grub

alfredo10 · 05-25-2013, 02:09 PM

Hi!
Fuduntu is my main OS, now with Grub 2 (replaced Grub legacy). I know, that "sudo update-grub" will not work.
As far as I remember, the command contains "...mkconfig...".
Who knows the full command?

GlennsPref · 05-25-2013, 08:10 PM

lmgtfy

grub 2 update grub

http://www.gnu.org/software/grub/man...b_002dmkconfig

syg00 · 05-25-2013, 08:51 PM

Quote:

Originally Posted by alfredo10

... now with Grub 2 (replaced Grub legacy). I know, that "sudo update-grub" will not work.

Depends.
A properly configured package-manager should either replace the script and it'll now work on grub2, or notify you it has deleted the script and replaced it with (for example) update-grub2.
I've seen both happen.

With Ubuntu derivatives you're probably better off using their scripts than mkconfig.

towheedm · 05-25-2013, 09:44 PM

The correct command for grub-mkconfig is:

Code:

sudo grub-mkconfig -o /path/to/grub2_dir/grub.cfg

If you have a standard installation, then:

Code:

sudo grub-mkconfig -o /boot/grub/grub.cfg

will generate the new configuration file grub.cfg in /boot/grub.

Note that the command:

Code:

update-grub

is simply a wrapper script for grub-mkconfig. This command is standard only on Debian-based distros.

On some distro, Fedora and openSUSE for example, the command is grub2-mkconfig.

alfredo10 · 05-26-2013, 05:30 AM

Hi!
Thanks for the hints - before posting I was searching several hours and did not find a Fuduntu command.
"mkconfig" did not work [my folder is grub2].

Code:

alfredo@notebook-0 ~ $ su -
Passwort: 
notebook-0 ~ # grub-mkconfig -o /boot/grub2/grub.cfg
bash: grub-mkconfig: command not found...

syg00 · 05-26-2013, 06:14 AM

Try "sudo update-" (no quotes) and hit the <tab> twice. You should see any commands available (or you could use updatedb/locate).

alfredo10 · 05-26-2013, 08:20 AM

Hi!

Code:

update-alternatives      update-gtk-immodules     update-pciids
update-desktop-database  update-mime-database

No idea!

alfredo10 · 05-26-2013, 08:27 AM

Hi!
Suddenly I had an idea - it worked!

Code:

grub2-mkconfig -o /boot/grub2/grub.cfg

towheedm · 05-26-2013, 10:14 AM

Fubuntu is based on Fedora. As I said in my previous:

Quote:

On some distro, Fedora and openSUSE for example, the command is grub2-mkconfig.

Glad it worked out eventually.

alfredo10 · 05-26-2013, 12:46 PM

Hi towheedm!
Sorry -overlooked.

syg00 · 05-26-2013, 05:34 PM

Quote:

Originally Posted by towheedm

Fubuntu is based on Fedora.

Sorry for misleading - I (obviously) was thinking Ubuntu based ...

alfredo10 · 05-27-2013, 03:16 AM

Hello altogether!
Thanks at all - I've learned a lot.