root@ubuntu:/# grub2-install /dev/sda
No command 'grub2-install' found, did you mean:
 Command 'grub-install' from package 'grub' (main)
 Command 'grub-install' from package 'lupin-support' (main)
 Command 'grub-install' from package 'grub2-common' (main)
grub2-install: command not found