On 7 Oct 2012 11:35, "contro opinion" <email@example.com> wrote:
> i compiled the grub1.99 ,download tar package ,make and install it,
> must i delete it and reinstall it ?
Update-grub is a script, that you might not have, especially if you compiled from source. The actual work is done by the command grub-mkconfig e.g.
$ grub-mkconfig -o /boot/grub/grub.cfg
There might be some 2's there after any of the grubs (grub2-mkconfig, /boot/grub2). Check which of the commands and directories do you have in your computer.