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How can I debug the grub2.02?

From: Sherry Zhang(BJ-RD)
Subject: How can I debug the grub2.02?
Date: Wed, 22 Aug 2018 10:20:00 +0000

Hi all,

Platform : i386-pc



I run into a error while I am testing.  I have found that it is normal berfore BIOS using the INT19 . But when the linux OS System is booting , I can see the error log.

So I doubt the error happens when the grub is running.

If I want to debug grub, how can I see the booting log of the boot.img and core.img?

For example :


grub_boot_time ("After loading embedded modules.");

How can I see this log?


Best regards,

Sherry Zhang


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