Install grub-rescue-pc by entering the following commands in the terminal:
sudo apt update sudo apt install grub-rescue-pc
Description:
GRUB bootable rescue images, version 2 (PC/BIOS version)
This package contains three GRUB rescue images that have been built for use with the traditional PC/BIOS architecture: . - grub-rescue-floppy.img: floppy image. - grub-rescue-cdrom.iso: El Torito CDROM image. - grub-rescue-usb.img: USB image.
Homepage: http://www.gnu.org/software/grub/
Version: 2.02-2ubuntu8
Section: universe/admin