WSL2-Linux-Kernel VS darwin-xnu

By the way, Microsoft publishes the WSL kernel source, under GPL, as they must: https://github.com/microsoft/WSL2-Linux-Kernel

From here on out it gets a bit hazy. For kernel builds you will have to use the Microsoft Linux Kernel (don't laugh, it's actually a thing). The USBIPD project walks through a WSL kernel build, so you can use that as a guide of sorts. Once you've done everything you need with the disk, the Gentoo project shows how to import it, but if you already have the VHDX file, I think the import-in-place option may be simpler. Take care in CH2 when making the filesystem. I'm not sure if WSL want's only one ext4 partition or if it walks the disk looking for root. There may be some .wslconfig settings for this, my first guess would be kernelCommandLine.

This was true for WSL1, but WSL2 does contain a Linux kernel. The source code for it is available at:

https://github.com/microsoft/WSL2-Linux-Kernel

git clone --branch mytag0.1 --depth 1 https://github.com/microsoft/WSL2-Linux-Kernel use tag for your version

But if you need a custom kernel then build it by taking Microsoft's kernel config as your base and then set the following up accordingly in your %USERPROFILE%\.wslconfig file:

It uses a customized version of the Linux kernel (repo) that integrates with the host Windows OS. You can build any distro on top of that kernel, as people have done with (of course) Arch. The distro isn't any less "real" than a distro that it run on QEMU (and with a level 1 hypervisor, all systems that uses one are technically virtualized already).

I recompiled the kernel using sources from https://github.com/microsoft/WSL2-Linux-Kernel with experimental genpatches applied.

KERNVER=$(uname -r | cut -f 1 -d'-') git clone --branch linux-msft-$KERNVER --depth 1 https://github.com/microsoft/WSL2-Linux-Kernel.git ~/kern-$KERNVER zcat /proc/config.gz > ~/kern-$KERNVER/.config make -C ~/kern-$KERNVER -j 4 make -C ~/kern-$KERNVER -j 4 modules_install ln -s /lib/modules/$KERNVER-microsoft-standard-WSL2+ /lib/modules/$KERNVER-microsoft-standard-WSL2

Here's the C source code of the font itself, as a 256x16 array of 8 bit values.

> Update: fortunately there's still Mac OS.

Go download the source for Darwin.. https://github.com/apple/darwin-xnu

Compile it. Install it on your MacBook. Tell us how well MacOS boots that kernel.

What is still true? That apple kernels are Mach kernels? It still is very true. Darwin is (mostly) open source, you can check it out here: https://github.com/apple/darwin-xnu

Everything that includes copyleft code is open source. You can see https://opensource.apple.com for a full list

Jup! Their kernel was based on FreeBSD, IIRC, and is Open Source!

Funfact darwin itself is open source aswell: apple/darwin-xnu: The Darwin Kernel (mirror). This repository is a pure mirror and contributions are currently not accepted via pull-requests, please submit your contributions via https://developer.apple.com/bug-reporting/ (github.com)