grub-xen-dbg software package provides GRand Unified Bootloader, version 2 (Xen debug files), you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install grub-xen-dbg
grub-xen-dbg is installed in your system.
Make ensure the grub-xen-dbg package were installed using the commands given below,
$ sudo dpkg-query -l | grep grub-xen-dbg *
You will get with grub-xen-dbg package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Debug packages |
| Package | grub-xen-dbg |
| Version | 2.02~beta2-36ubuntu3 |
| Description | GRand Unified Bootloader, version 2 (Xen debug files) |
| Sub Section | debug |