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List:       grub-help
Subject:    RE: How to debug GRUB2 if my grub_dprintf is not working ?
From:       "Baylis, Neil" <neil.baylis () hpe ! com>
Date:       2018-07-24 22:34:53
Message-ID: TU4PR8401MB094101239856031B2A8EF829E4550 () TU4PR8401MB0941 ! NAMPRD84 ! PROD ! OUTLOOK ! COM
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You can try grub_printf instead of grub_dprintf.

-----Original Message-----
From: Help-grub [mailto:help-grub-bounces+neil.baylis=hpe.com@gnu.org] On Behalf Of \
                shenbagaraja s
Sent: Thursday, July 19, 2018 3:08 PM
To: help-grub@gnu.org
Subject: How to debug GRUB2 if my grub_dprintf is not working ?

I am facing issue in my server which is hanging up everytime on grub shell.
And I am trying to debug this grub2 issue by adding grub_dprintf.
But those printf statements whatever I added are not visible in the console.  I also \
tried "set debug = all" from the grub shell prompt.

Is there some other way of adding the debug prints inside grub2 source?

Also I would like to know about how to debug Grub2 issue from  using GDB?

My   GNU GRUB version is 2.02~beta and OS is RHEL 7.4

Could anyone help on this?

Thanks
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