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I'm running 3.10-3-686-pae, and I think I would like to upgrade to 3.12 just so I can learn more about how it all works. My computer runs pretty well considering how old it is. I have been learning to use Linux for a little over two months.

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3 Answers

You might find this article a bit educational to answer the 'why' portion of your question. As for 'how?' That sort of depends on your particular flavour of linux. And compiling a custom kernel can get pretty involved. For me, the most educational experience came from following Gentoo's guide on the subject.

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Linux is highly modular and therefore the kernel is more commonly discussed as a lot can be done with it. For example, you could take the kernel, patch it up with lots of fixes, tweak other settings, strip out everything you won’t need, and then replace your original kernel with your final product, and it will run just fine.

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How to get the latest kernel? Goto kernel.org and download the "mainline" tar.xz file. Make sure you have plenty of hard drive space. wget https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.12.tar.xz

I normally use opensuse, but you may need to make adjustments to the process for your distribution.

decompress the kernel.

says you put it in /usr/src/kernel
goto to that folder.
cd /usr/src/kernel
make localmodconfig
make -j 8 bzImage
make -j 8 modules
make -j 8 modules_install
make -j 8 install

yast bootloader
select the new kernel version and set it active.
reboot and it is active.
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