User's perspective on upgrading to kernel 2.4?

[Richard Cobbe <cobbe@airmail.net>]

Greetings, all.

I'm happily running woody with kernel 2.2.20, and I'm thinking of
upgrading to kernel 2.4.18.  Before I do this, though, I'd like to know
more about this process -- it's been a long time since I upgraded across
minor version numbers.

First question: what are the major differences between 2.2 and 2.4 from
a *user's* perspective?  I know about the improved scheduler and
wake-one and USB support and things like that, but that's not what I'm
asking.  For now, I'm interested primarily in what differences I will
see as I use my system; I'll worry about the system-level programming
interfaces later.

Second question: is it possible to have a 2.2 kernel and a 2.4 kernel
installed on the same system and switch between the two by means of
LILO?  It's a little unclear, but I get the impression that the /dev
hierarchy, in particular, is very different between the two, which
suggests that switching back and forth is not very easy.

Any and all comments welcome,

Richard


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