Bug 215344

Summary: Kernel problems section of Handbook is incomplete
Product: Documentation Reporter: tschweikle
Component: Books & ArticlesAssignee: freebsd-doc (Nobody) <doc>
Status: Closed Overcome By Events    
Severity: Affects Only Me CC: carlavilla
Priority: ---    
Version: Latest   
Hardware: Any   
OS: Any   

Description tschweikle 2016-12-16 17:12:26 UTC 
https://www.freebsd.org/doc/handbook/kernelconfig-trouble.html

Tells how to replace a kernel with an older one. But it does not describe hot to boot an older kernel it the newer on does not work or crashes.

It is a bad mistake to think you'll have a running system in front of you. You might have a crashing system in front of you and you are forced to boot an old kernel. It should describe how to do this.

After you managed to boot you crashing system agein, you'll be able to replace the new, crashing kernel with an old one.
Comment 1 Sergio Carlavilla Delgado freebsd_committer freebsd_triage 2020-01-27 18:43:53 UTC 
It is sufficiently covered in the handbook.