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Re: [PATCH] Improve documentation of BIOS installation

From: Barry Jackson
Subject: Re: [PATCH] Improve documentation of BIOS installation
Date: Thu, 31 Mar 2011 09:38:37 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-UK; rv: Gecko/20110330 Lightning/1.0b2 Lanikai/3.1.10pre

On 30/03/11 20:52, Colin Watson wrote:
On Wed, Mar 30, 2011 at 08:00:46PM +0100, Barry Jackson wrote:
On 29/03/11 13:40, Colin Watson wrote:
With being down at the moment,
I went to look at what corresponding documentation there was in the

One question that I cannot find an answer for in the manual here :-
18.1 GRUB only offers a rescue shell
It explains that the only available commands are ls, set, unset and insmod.
So what use is it?
Assuming that a module is missing or a variable is incorrect, and
these are corrected with insmod and set - what next?
I can see no way to boot after correcting things without a 'boot'
command available. If you can't boot, why bother with set or insmod.
I just don't get it!

The manual even answers this question directly with an example:

See the example after "then you can correct this and enter normal mode

(Once you are in normal mode with a correct prefix, then commands will
be autoloaded, although you could insmod them manually if you really
wanted.  But this should be self-explanatory once you do it, as entering
normal mode will give you a GRUB menu.)

I've extended the text you refer to
( to link to
this troubleshooting section.  It'll be there the next time we push to
the website.


Thanks Colin,
I was being a bit dim - or maybe it was late.
I had not grasped the concept of the 'normal' command which was not included in the list of available commands.

It's much clearer now.

Maybe next time I'm hit with a rescue shell I may just be able to boot from it ;-)


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