Debugging kernel boot

Sometimes your system might fail to boot due to changes within the kernel. Hence it is important that when creating reports about these failures, all the appropriate information about debugging is included. This will be useful for the kernel team in resolving the issue.

How to do it...

If you are trying to capture error messages that appear during boot, then it is better to boot the kernel with the quiet and splash options removed. This helps you see the messages, if any, that appear on the screen.

To edit boot option parameters, do the following:

1. Boot the machine.
2. During the BIOS screen, press the Shift key and hold it down. You should see the GRUB menu after the BIOS loads...