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Re: GRUB2 Enable Debug Messages

From: Andrei Borzenkov
Subject: Re: GRUB2 Enable Debug Messages
Date: Thu, 30 Jun 2016 20:24:33 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0

30.06.2016 01:11, ARMANDO FERREIRA LEE ENG пишет:
> Hi All,
> Is there a way to enable some debug messages of GRUB2? I don't mean
> Kernel Debug Messages, what I want is the GRUB2 Bootloader Messages.
> This for some firmware debugging purpose. :)

set debug=foo,bar,baz

where "foo", "bar", "baz" are tags for which you want to enable debug
output or

set debug=all

to enable everything. You can also do

grub-install --debug-image=all

to set it from the earliest point in time possible.

You will need to check sources (look for grub_dprintf) to find out what
tags are in use.

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