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List:       grub-help
Subject:    Re: Stuck in grub rescue shell
From:       Pascal Hambourg <pascal () plouf ! fr ! eu ! org>
Date:       2018-04-04 18:35:29
Message-ID: fe02a227-15e8-ed24-e50c-cfefee5e8581 () plouf ! fr ! eu ! org
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Le 04/04/2018 à 02:06, Luciana Napolillo a écrit  :
> I installed ChaletOS, but when trying to boot it for the first time once
> installed, I was sent to the grub rescue shell. I followed these steps that
> I found googleing, to set the "prefix" and "root" variables correctly
> (since they weren't):
> 
>     1. set root=(hd0,msdos2)/  *--> When issuing the command: "ls
>     (hd0,msdos2)/" it shows the linux root, so I know this is the correct
>     partition.*

Only if the contents of /boot/grub is included in the root filesystem.

>     2. set prefix=(hd0,msdos2)/boot/grub/i386-pc    *--> here is where I
>     found all the .mod  files where at (also tried with *
> *usr/lib/grub/i386-pc which also contained .mod files) *

AFAIK, the $prefix path should not include the target (i386-pc) but only 
/boot/grub.

>     3. insmod normal  * --> This is where the problem is. I get this error:
>     symbol not found: 'grub_divmod64'.*

It could mean that the modules in /boot/grub are not the same version as 
the booted core image. Could it be an old core image that was not 
replaced when you installed the new distribution ? This would also 
explain why $prefix and $root are wrong.

> Could you please give me a hand? I cannot boot from a live CD, because grub
> won't let me
Why not ? Please explain.
How did you boot the ChaletOS installer ?

> and I'm certain that my BIOS boot priority is configured
> correctly to boot from my USB (which I could do perfectly before all this
> happened), so I need to solve it somehow from the grub rescue shell :(

If the GRUB modules of the same version as the booted core image have 
been deleted, you are out of luck. The GRUB rescue shell allows only to 
set variables and load modules.

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