Can't boot GENERIC kernel 5.4

[Matt Kosht]

I screwed up compiling my last kernel by omitting the processor type
the PC actually was using.  Yeah real swift I know.  So naturally it
panics when using this custom kernel.  I would like to boot the
GENERIC kernel.  The instructions I have from the handbook say to get
to the loader prompt and type unload then boot /kernel/kernel.GENERIC
.  I do this but the loader says it can't find it.  What am I doing
wrong?