Experiment, partial positive results: 2.6.2
I installed a 2.6.2-1 Kernel Image and successfully made an initrd with ext3
and ... and ... the thing booted (after a small correction in the
mkinitrd.conf requested by the first panic message!).
OK. Alsa would start up. I did not expect it to since there is an updated alsa
for this kernel and some stuff built in for it. (If I want to use this kernel
but keep my old one around for a while, might a get the newer alsa and not
kill the older one?)
A couple of modules were not found. "Assumed built into kernel". No harm
And, oh yes, the mouse did not work but there has been a lot of that going
around lately :-) Would the /dev/mouse0 entry in XF86Config-4 interfere with
the old kernel?
Similar initrds made for my 2.4.22-xfs are not accepted as valid ram images.