I have the same issue when /boot is a separate ext2 partition. If I change it to ext4, grub-install will succeed.
Package: grub-pc Architecture: amd64 Version: 1.99-27+deb7u2 -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
