Re: Install grub2 onto un-tarball'ed system

[Simon Hobson]

Schmidt, Christian Thorge wrote:

> I frequently install systems from tarbell'ed systemimages. I use a 
> USB thhumbdrive to boot, then prepare my HDD(s) and untar the system 
> onto them, then proceed setting up grub.
> After switching to grub2, Ubuntu 12.04's default bootloader, I 
> cannot do my usual
>
> $ grub
> grub> root (hd0,0)
> grub> (setup (hd0)
> grub> quit
>
> anymore - what would I do to install my tarball's grub2?

Yeah, it used to be so easy didn't it.

As far as I can make out, this should do it :
grub-install --no-floppy --root-directory=/mnt/dest /dev/sda

But you may have to manually create a grub.cfg file for the first boot.


Alternatively, I think I've done it by getting to the grub menu at 
boot time (not all live/install disks make this easy) and manually 
booting it. From memory it's a matter of typing "kernel vm<tab>" 
followed by "initrd init<tab>" and then "boot" - at least GRUB2 
supports <tab> for autocomplete :) BUT - you need to specify the 
device first and I can't remember offhand how to do that (I've only 
recently done it with a broken grub where the bootloader was already 
on the drive).

--
Simon Hobson

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