extlinux question

[Gene Czarcinski]

I am not sure when this started happening, but with "recent" Fedora 
releases for systems with grub2 bootloaders, an additional "rescue" 
kernel has been provided.  This "rescue" kernel is never updated but 
remains the same as that provided by anaconda.  I assume that it is the 
kernel that was available at install time.  I also assume that the 
purpose of the "rescue" kernel is to provide a backup capability just in 
case the updating of kernels has managed to create an unbootable system.

The question:  If this is a good option for grub2 based systems, why 
isn't a good options to have for systems with extlinux bootloaders too?

Just curious.

Gene