Can't redirect stout and stderr

[Rodolfo Medina <rodolfo.medina@gmail.com>]

Hi all.

My old pc has corrupt filesystem problems, and, in order to ask the present
list some help about that, I need to store to a file the output of
`update-grub', both stdout and stderr, but don't manage to even using any of
the solutions suggested wherever I could find them: nor `update-grub > file'
nor `update-grub &> file' neither `update-grub > file 2&1'.

Please help!

Thanks in advance,

Rodolfo