Hello

I'm not aware of something like enabling debug mode that would produce additional output for troubleshooting. That may exist, but I haven't heard of it and it may only be available with development access. You can find information about debug options available in the iDRAC manuals.

http://www.dell.com/idracmanuals/

If you cannot find the information you are looking for in the various iDRAC and hardware logs then you can see what options are available for reviewing the debug log. I think you need to export a supportassist collection to extract the log. The latest manuals appear to be on the 3.21.21.21 support page.

Thanks