problem installing grub

[Ali Milis]

AFAIK,

This is a long known problem...  apparently grub does not like
the previous grub installation in the disk partition.

You should either delete manually the grub in the partition,
or reinstall manually the grub (boot in emergency mode).

regards,

-- 
Raja Ali M.I. Ilias, Bengkalis, https://wiki.ubuntu.com/AliMilis
Counted GNU/Linux Engineer # 405138 - http://counter.li.org/