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I want to edit linux os, How should i edit?
please help me!

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For : clarify the goal first — change a device driver, tweak a scheduler, add a filesystem, or just reduce build size? As noted, the approach depends on scope. Many issues that look like “kernel” problems are better solved in user space or by an external module; editing core code is heavier and riskier.

Development safety and workflow: do kernel work only on a disposable test system or inside a VM with snapshots. Keep a boot fallback and recovery media so a bad build doesn’t brick the machine. Use version control and a dedicated branch for each change, make small, self-contained commits, and build installable packages for easy rollback when possible. For driver-level work prefer an out-of-tree module managed by DKMS-style tooling so updates don’t break it. Take ’s warning seriously: plan recovery steps before making changes.

Example git workflow (conceptual):

git clone <kernel-repo>
git checkout -b feature/my-change
# edit the specific files
git add <files>
git commit -s -m "subsystem: brief description"
git format-patch origin/main --stdout > 0001-my-change.patch

Testing and debugging: use kernel logging and tracing (kernel logs, ftrace, perf), run available self-tests, and use git bisect to find regressions. Test one change at a time and verify with simple reproducer programs. If aiming to contribute upstream, follow kernel coding style, keep patches small and focused, include clear rationale, and use sign-off lines. Final caution: kernel development can cause panics and data loss — always work on isolated systems, keep backups, and document every change so it can be reverted quickly.

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Member Avatar for L7Sqr

It really depends on what you want to change. You will have to be more specific. In general, you find the source code for the part that you want to change, modify it to suit your needs, recompile and deploy.

Member Avatar for rubberman

I presume you want to reconfigure your kernel, perhaps to remove unneeded drivers, and such? You need to visit www.tldp.org and your Linux distribution's web site for "building a kernel" FAQ. In any case, you need to do the following at a minimum:

  1. Download and install the kernel sources.
  2. Go to the source code root directory.
  3. Run the command "make menuconfig" or "make xconfig".
  4. Run the make command to build the kernel.
  5. Run "make install" as root the install the kernel and drivers.

Do 1-4 as a regular user. #5 needs to be done as root, or sudo.

The "make menuconfig" in #3 will present you with a text-based (ncurses) form to edit the kernel configuration. The "make xconfig" will present you with an X-Windows based GUI to do the same. I prefer the xconfig myself since it has more useful help information.

Doing a manual kernel configuration is mostly useful when you need non-standard file system drivers automatically installed, or if you want to configure a minimal kernel for an embedded device or other small system.

All that said - RTFM! DO NOT DO THIS WITHOUT PREPARATION! Also, study the documentation for your boot loader, and remember that the above comments and instructions may NOT be complete for your distribution! Caveat user! :-)

FWIW, I only do this now for embedded systems that I am building. The last custom kernel that I built for my workstation/server was 3-4 years ago, though I have done this for specialized servers many times since then. Usually, if you need some driver installed that is not part of the default kernel or installation, that can be done by building the driver and installing it with the modprobe or insmod commands. So, exactly why do you want to "edit" your kernel?

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