/usr/lib/grub/下没有i386-pc, 有x86_xxx

转载：

https://askubuntu.com/questions/784990/grub-2-install-error-grub-install-error-usr-lib-grub-i386-pc-modinfo-sh-does

问题：

I am trying to install grub2 from a live CD of lubuntu 16.04, I am following this tutorial, after I mounted the /dev/sda1 in the mnt folder using this commands

sudo mount /dev/sda1 /mnt
sudo mount /dev/sda1 /mnt/boot
sudo mount --bind /dev /mnt/dev

Then changing the root directory :

    sudo chroot /mnt

But when try installing grub using sudo grub-install /dev/sda I get this error :

sudo: unable to resolve host ubuntu
grub-install: error: /usr/lib/grub/i386-pc/modinfo.sh doesn't exist.   Please specify --target or --directory.

I tried turning off the uefi mode from bios but I think that my bios version doesn't even support it because it is from 2005

=========================================================================​​​​​

解答：

Dont know if you solved your problem, thus this is 1y ago.

I ran into a same situation recently in Ubuntu 18.04, that chroot to another directory and run grub-install:

$ chroot /media/cdrom0 grub-install

Throws error:

grub-install: error: /usr/lib/grub/i386-pc/modinfo.sh doesn't exist. Please specify --target or --directory.

Finally solved this error by installing grub-pc:

$ sudo apt-get install grub-pc

After this, items under /usr/lib/grub changed from:

grub-mkconfig_lib  x86_64-efi  x86_64-efi_signed

To:

grub-mkconfig_lib  i386-pc  x86_64-efi