a possible duplicate of this bug is this: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/879109 I'm not sure enough to add it as duplicate maybe someone else can add it if he/she is sure.
a possible duplicate of this bug is this: /bugs.launchpad .net/ubuntu/ +source/ grub-installer/ +bug/879109
https:/
I'm not sure enough to add it as duplicate maybe someone else can add it if he/she is sure.