Shrink Kernel Size For 64 MB RAM

Question

I'm working on reduction of kernel size in Ubuntu. I've compiled and installed the kernel 5.2.3 stable now i want to remove kernel modules manually.

I've tried with rmmod command and after rebooting the Ubuntu it appears again in lsmod list.

I want to reduce kernel size so that i can run stably on 64 MB machines? Can someone guide me how can i do this?

What do you mean by 64MB? Do you mean 64GB or 64-bit? Or is it a specific component that is 64MB? — Daniel M., Oct 08 '19 at 15:26
I want to make kernel size small so that it can run on 64 MB Ram — Minner, Oct 08 '19 at 15:31
Okay, that makes sense :). Sorry I just didn't understand what you meant by 64MB. Thanks for clarifying this. — Daniel M., Oct 08 '19 at 15:33

Florian Diesch · Answer 1 · 2019-10-08T15:49:41.323

2

rmmod just unloads kernel modules but doesn't remove them from the kernel.

You need to recompile the kernel. See What's a simple way to recompile the kernel? for how to do that.

When recompiling to have to change the kernel's configuration in the make menuconfig or make xconfig step and remove the modules and other unneeded features there. The new kernel's configuration isn't affected by rmmod.

edited Oct 08 '19 at 15:49

answered Oct 08 '19 at 15:26

Florian Diesch

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Do I've to recompile kernel after unloading the modules? – Minner Oct 08 '19 at 15:32
Edited my answer to clarify this. – Florian Diesch Oct 08 '19 at 15:49

Shrink Kernel Size For 64 MB RAM

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