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Number of kernels in /boot Fedora vs. Ubuntu

I've mentioned this before. With Fedora 14 and previously with SuSE,
whenever I get a kernel update, the older kernel packages are
automatically removed so only the 3 most recent kernels (and modules)
are installed. Actually, while only 3 kernels are installed on my system
(I also have 3 old module directories from F13 with no content).

However on Ubuntu, (10.10) I actually have 5 kernels installed.

While this does not really cause any problems except possibly on an
upgrade, I was wondering if there is a parameter somewhere that
specifies the number of previous kernels. Certainly one can manage this
through yum (Fedora) and dpkg (Ubuntu). On fedora, /etc/sysconfig/kernel
tells the system that the latest kernel should be the default. The
Fedora and Suse strategy to keep the previous 2 kernels seems to be a
reasonable strategy. Does Ubuntu (Debian) just have a different strategy
with a different number of prior kernels, or do they just keep adding on
when there is a new kernel update.

Jerry Feldman <gaf-mNDKBlG2WHs at>
Boston Linux and Unix
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