Re: grub-install BIOS vs UEFI

[Mads Kiilerich]

Chris Murphy wrote, On 12/18/2012 01:15 AM:
> I'm finding that on BIOS hardware:
>
> # grub-install
>
> all by itself produces the help file for grub-install. An install device is 
> required.

Just to clarify: grub-install on BIOS without parameters will _fail_ 
with the error message "Install device isn't specified.". Further, it is 
helpful and displays the instructions for how grub-install should be used.

> Conversely on UEFI hardware, I'm finding the command works without any 
> qualification: it finds the proper location for /boot/efi/EFI/fedora which is 
> of course the EFI System partition; and it also finds /boot/grub/x86_64 and 
> installs mod files in /boot/grub/x86_64-efi.
>
> Is this expected?

Yes, that is how it is designed. It is a mandatory convention that ESP 
has to be mounted on /boot/efi, and that designates where the bootloader 
should be installed.

The actual bootloader ID that is used on the ESP is set automatically 
and configurable in several ways.

/Mads