[Ubuntu Wiki] Update of "DebuggingKernelBoot" by penalvch

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The "DebuggingKernelBoot" page has been changed by penalvch:
http://wiki.ubuntu.com/DebuggingKernelBoot?action=diff&rev1=17&rev2=18

Comment:
RM'd "instructions before instructions" as redundant, and confusing.

  
  = Boot Options =
  
- When trying to capture relevant error messages that appear at boot it is often useful to boot with the '''quiet''' and '''splash''' options removed. This will hopefully allow you to see any messages that come across your screen.  To edit boot option parameters, do the following:
+ When trying to capture relevant error messages that appear at boot, one may edit boot option parameters via:
  
   1. Boot the machine.
   1. During the BIOS screen, press the shift key and hold it down. You should see the GRUB menu after the BIOS loads.
@@ -18, +18 @@

  set gfxpayload=text}}}
   1. Press 'Ctrl+x' to boot.
  
- It's best if you can attach a log file which may have captured any messages you see. If you are unable to capture a log file, a digital photo will work just as well. As a last resort you can even copy messages down by hand.
+ It's best if you can attach a log file which may have captured any messages you see. If you are unable to capture a log file, a video will work just as well. As a last resort you can even copy messages down by hand.
  
  Depending on the type of error messages you encounter, there are other boot options you could try. For example, if you notice ACPI errors, try booting with the '''acpi=off''' boot option. For a full description of these options, refer to the [[https://www.kernel.org/doc/html/v4.14/admin-guide/kernel-parameters.html|kernel parameters]] document.