How to reconstruct GRUB for 14.04 on MBPro?
israeldahl at gmail.com
Mon Oct 13 16:12:33 UTC 2014
On 10/13/2014 10:25 AM, Fritz Hudnut wrote:
> On Mon, Oct 13, 2014 at 5:00 AM,
> <lubuntu-users-request at lists.ubuntu.com
> <mailto:lubuntu-users-request at lists.ubuntu.com>> wrote:
> Yes you can reinstall GRUB2...
> You boot a LiveCD and can reinstall GRUB2 from there
> the command grub-install will do it.
> You will need:
> the ID of bootloader. This option is only available on
> EFI and
> I don't entirely know the syntax for installing on the Mac MBR/GPT/EFI
> It is a very odd system Apple uses.... however I think (in theory) you
> should install it to the partition, rather than the MBR/GPT thing that
> Apple uses...
> On a side note:
> if you don't want refind/refit:
> which is based on:
> I have never done this, but it looks really interesting
> Appreciate the reply, I'll check it out later, maybe tomorrow . . . in
> terms of the "liveCD" . . . I can log in to the system using SG2 . . .
> so I can or could run commands in the system. But, as mentioned,
> synaptics shows that "Grub2" is installed . . . ??? But, the GRUB
> window doesn't show up in the process, and the "windows" disk that
> usually has 14.04 also doesn't show up in the OSX boot loader window
> with the option key, etc.
> Another question, what or where would I find the "bootloader-id"?? . .
> . and, then, what would I do with it?? I get that you are suggesting
> "sudo apt-get grub-install"??? But, then are you talking about the
> addition of something like "/sda"????
> I think I ran several of these commands already, running through the
> "Boot Repair Disk" and the SG2 list, and one of the Alt install
> recovery modes, and the SG2 "find the GRUB CFG file" which took me to
> the kernel (recovery) . . . and ran through that . . . . I would need
> some exact commands to run . . . happy to try them out . . . .
> I'll take a look at the "pure-efi-boot" stuff when I get to this . . .
> don't have the SG2 disk with me at work, or any install disk, etc.
>From the live cd you will need to mount the drive and chroot into it (or
at least this is how I'd do it on a non mac)
so it will be something like (be sure you have the right sda device use
fdisk -l /dev/sda to list some stuff)
mount --bind /dev /mnt/dev
mount --bind /sys /mnt/sys
mount --bind /proc /mnt/proc
this will then take you into your installed system
PLEASE NOTE: I do not know if you need to run the grub-install command
with the/--bootloader-id/ option or not.... I have not actually
installed this on an EFI Mac in this way.
then *umount* your mounted folders (these are for the computer's actual
hardware so the chroot uses the real computer ) note, this says
*u*mount not un-mount there is no 'n'
There is also this link:
which may or may not help :)
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Lubuntu-users