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Drop in kernel replacement?



I have seen quite a few messages on this list concerning kernel
upgrades. Since I have been using the bf2.4 kernel since
installation time, I tried to install an optimized i686 kernel.

I was hoping that after apt-get, lilo + initrd and reboot everything
would be fine.

It wasn't. I have yet to investigate what is missing. But I would
like some general information about the process of selecting and
installing a kernel.

Why install initrd? To enable kernel selection at boot time (and get
the old system back when something fails)?

I have now /initrd on my system, but this directory is empty. In
/boot there is a initrd.img file. After I boot I get a selection
menu? Is this all there is to preparing a system for a kernel
upgrade?

Is bf2-4 a kernel with everything imaginable enabled and will I have
to load extra modules for my system when using the i686 kernel?

Apart from the fun of trying out new stuff and learning, will there
be a real world performance difference when I use an optimized
kernel?

Those are the issues I can think of. Are there any other topics,
gotchas or whatever to consider?

Bob

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