grub-install

[bpark]

Even though grub-install is becoming deprecated, I guess it's the easier way to install.

I wanted to ask about the option '--root-directory' for grub-install. When you run grub-install, it needs to locate the GRUB image files. My understranding is that if that option is not specified, then it'll look for it in the root directory. As far as I can tell, there are two places under the root directory which contains these image files.

1. /boot/grub
2. /usr/lib/grub/i386-pc

Exactly which one of these does grub-install use? I only ask because when this happens:

[root@spruce brock]# grub-install --root-directory=/boot /dev/fd0
The file /boot/boot/grub/stage2 not read correctly.

As where 'grub-install /dev/fd0' works out just fine.

[Hellmasker]

it seems its using $ROOT_DIRECTORY/boot/grub

so if u specify $root_directory as /boot then its looking in /boot/boot/grub .. which doesnt exist.

so change the thing about root directory to / and it should work.

<edited for bad spelling, even by my standards >

[bpark]

Crap, I can't believe I didn't read that error more thoroughly. So from this mistake, I think that setting that option really pertains to another partition on a disk that's already mounted? Does it always look for /boot/grub?

[Dolda2000]

Yeah, grub-install always looks for /boot/grub. In fact, it's merely a shell script, so you can check and modify precisely what it does.