Serious GRUB booting problem after install Ubuntu 9.10beta for testing it.

[Tom H]

> "grub-install" and "grub-setup -d...." is done at the linux command
> shell. Can any grub2 command be done at the >grub shell to do the same
> function, like "root, setup" is used for grub-legacy?

grub> help
Lists the available commands and setup is not there.

http://grub.enbug.org/CommandList says that both install and setup are
unnecessary and root is a variable.

Could rescue mode be the reason for the unnecessary? No idea.