me@it:~$ date ; sudo dpkg-reconfigure grub-pc --frontend=text ; date
> Thu Feb  4 23:33:58 MST 2016
> Configuring grub-pc
> -------------------

> The following Linux command line was extracted from /etc/default/grub or the `kopt' parameter in GRUB Legacy's menu.lst. Please verify that it is correct, and modify it if necessary. The command line is allowed to be empty.

> Linux command line: <null/>

> The following string will be used as Linux parameters for the default menu entry but not for the recovery mode.

> Linux default command line: <null/>

> Replacing config file /etc/default/grub with new version
> The grub-pc package is being upgraded. This menu allows you to select which devices you'd like grub-install to be automatically run for, if any.

> Running grub-install automatically is recommended in most situations, to prevent the installed GRUB core image from getting out of sync with GRUB modules or grub.cfg.

> If you're unsure which drive is designated as boot drive by your BIOS, it is often a good idea to install GRUB to all of them.

> Note: it is possible to install GRUB to partition boot records as well, and some appropriate partitions are offered here. However, this forces GRUB to use the blocklist mechanism, which makes it less reliable, and therefore  is not recommended.

>   1. /dev/sda (500107 MB; ST9500420AS)  2. - /dev/sda3 (524 MB; /boot)  3. /dev/dm-2 (21474 MB; LVM2_crypt-root)  4. none of the above

> (Enter the items you want to select, separated by spaces.)

> GRUB install devices: 1

> Installing for i386-pc platform.
> Installation finished. No error reported.
> Generating grub configuration file ...
> Found linux image: /boot/vmlinuz-3.16.0-4-amd64
> Found initrd image: /boot/initrd.img-3.16.0-4-amd64
> Found linux image: /boot/vmlinuz-3.11-2-amd64
> Found initrd image: /boot/initrd.img-3.11-2-amd64
> Found Windows Recovery Environment (loader) on /dev/sda1
> Found Windows 7 (loader) on /dev/sda2
> done
> Thu Feb  4 23:34:54 MST 2016