grub-pc binary package in Ubuntu Bionic arm64

 GRUB is a portable, powerful bootloader. This version of GRUB is based on a
 cleaner design than its predecessors, and provides the following new features:
 .
  - Scripting in grub.cfg using BASH-like syntax.
  - Support for modern partition maps such as GPT.
  - Modular generation of grub.cfg via update-grub. Packages providing GRUB
    add-ons can plug in their own script rules and trigger updates by invoking
    update-grub.
  - VESA-based graphical mode with background image support and complete 24-bit
    color set.
  - Support for extended charsets. Users can write UTF-8 text to their menu
    entries.
 .
 This package contains a version of GRUB that has been built for use with
 traditional PC/BIOS architecture.