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MkLinux: The delightfully weird PowerPC Mac Linux Distro of the 1990s
Co-Developed by Apple, with Linux running as a user-mode task. Seriously.
June 01, 2023
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In 1996 -- just two years after Linux, itself, hit version 1.0 -- a version of Red Hat Linux was ported to PowerPC Macintosh computers... by Apple.

Seriously.

The very same Apple that currently opposes people running macOS on any non-sanctioned hardware -- and who fights (rather hard) to keep non-macOS systems from running on Apple hardware -- used to actively help port other systems to the Macintosh computers.  My-oh-my how times have changed.

Known as MkLinux -- short for "Micro-Kernel Linux" -- the development was a joint project between Apple and "The Open Group Research Institute" in France.  And it was a truly fascinating beast... because it wasn't quite your typical "Linux" system.

In fact, MkLinux really consisted of two different kernels:

  1. "Open Group Mach" -- a variation of the Mach microkernel which had been ported to a number of platforms, including: HP PA-RISC, x86, and (of course) PowerPC Macintosh.
  2. "Linux" -- a port of the Linux kernel itself.

What made MkLinux so strange... is that "Open Group Mach" was the lowest level kernel.  It would boot the system and provide a subset of hardware access... then "Linux" would actually be run as a task within "Open Group Mach".

A user mode task, no less!  Yes, in MkLinux... the "Linux" kernel is run as a standard, user-mode application!

Wild!

Over the years, MkLinux gained support for a number of different PowerPC Macintosh models (including some G3-based machines)... and, reportedly, had somewhere between 50,000 and 100,000 total users before eventually being all but abandoned by Apple and moving to become a small, community project.

I have personally run MkLinux on a Power Macintosh 6100 running at 66 Mhz.  Was it a speed demon?  No.  It felt quite a bit more sluggish than MacOS (7.x or 8.0) on the same system.  But, you know what?  It was a surprisingly usable Linux system!  Mostly stable, and fairly high quality!

In order to preserve some of the memory of this marvelously weird Linux "distribution", what follows is a bit of a visual tour of what using MkLinux was like on PowerPC Macs of the 1990s.

The official MkLinux website (note that it was hosted by Apple itself):

0141f1.jpg

As part of the installation process, you would place the Mach Kernel and bootloader into your Mac Extensions folder.

 

The MkLinux boot screen (a MacOS application that launched when your Mac booted... with buttons that let you choose whether to boot Mk Linux or MacOS):

Splash Screen

The MkLinux Installer!  Note this is a slightly modified version of the old Red Hat installer:

Installation Path

What kind of Mouse?  An ADB (Apple Desktop Bus) mouse, naturally!

MouseConfig Screen

Screenshot from a PowerBook 1400cs/133 running a customized MkLinux DR3 (Developer Release 3) installation:

pb1400cs-mklinux-080119-03-gif.814865

Another screenshot of MkLinux DR3:

_resize.php?w=640&h=480&bg_color=333333&imgenc=ZmlsZa26XMvbWcvc2l0ZXMvbWcvZmlsZXMvc2NyZWVuc2hvdHMvc2NyZWVuMDMuanBnfHd3dy5tYWNpbnRvc2hyZXBvc2l0b3J5Lm9yZy83NjAtbWtsaW51eA%3D%3D

You can find an archive of the very first release of MkLinux on Archive.org, and a great deal of in-depth details at MkLinux.org.  Unfortunately, that site hasn't been udpated since 2009.  Just the same, the information is historically fascinating.

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$89 Lifetime Subs All December

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September 13, 2023
"Andreas Kling creator of Serenity OS & Ladybird Web Browser" - Lunduke’s Big Tech Show - September 13th, 2023 - Ep 044

This episode is free for all to enjoy and share.

Be sure to subscribe here at Lunduke.Locals.com to get all shows & articles (including interviews with other amazing nerds).

"Andreas Kling creator of Serenity OS & Ladybird Web Browser" - Lunduke’s Big Tech Show - September 13th, 2023 - Ep 044

Whazzup, ladies and geeks? My work week - work YEAR - is over, it's Friday nite, so I'm back. And I got some fun stuff to talk about!

I got blessed with a $500 Amazon gift card! 🤯

At the Christmas party at work, they opened up the raffle to remote workers, so I threw a few bucks in. I still can't believe I actually WON! Now I'm doing my best to prevent it from burning a hole in my pocket. 😆 Frankly, I'll probably end up saving it - or at least most of it. But MAN is that gonna be hard!

  • I've been on the fence about the whole Mac thing, and I can finally afford one... for at least half my winnings.
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Here is another example from this account.

https://x.com/gothburz/status/2002167668846055920

If you want funny management/IT related stories, then check out this account. https://x.com/gothburz/status/2001978622685393301

December 17, 2025
The FOMO of not having a Lifetime Subscription to The Lunduke Journal

Time for some Fun Lunduke Journal Facts of Fact-ly-ness!

  1. The “per-month” cost of a Lifetime Subscription to The Lunduke Journal is an asymptotic line. The longer you have that subscription, the closer it gets to $0.00.

  2. The Lifetime Subscription was first introduced 3 1/2 years ago… and is still going strong.

  3. The price of a Lifetime Subscription is currently discounted to $89. For life. That’s less than 1/3rd the normal price.

The earlier you pick one up, the quicker that asymptotic line begins approaching zero. Which is fun.

We Don’t Have Time Machines

If you think you might ever want a Lifetime Subscription, now is the time.

Imagine missing this discounted price and missing out on months of, mathematically certain, asymptotic line fun. This is one of those scenarios where Future You (tm) would want to travel back in time to tell Present You (tm) to snag a Lifetime Subscription.

Go. Grab the Lifetime Subscription for $89. That deal is good all December long.

There’s a video of me yammering about it too. Just for good measure.

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December 13, 2025
Lunduke Journal Lifetime Wall 2 almost full, plus Lifetime Sub as a gift

Two quick tidbits!

First: Lifetime Wall 2 Almost Full

The 2nd Lunduke Journal Lifetime Subscriber Wall of Shame… err… I mean “Wall of Awesomeness” (which shows at the end of each video) is almost full! Holy cow! So many people have signed up over the last few days and asked to be added! Awesome!

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Plus, hey! You can snag one for $89 this month. Which is pretty sweet.

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How to get a Lifetime Subscription with Bitcoin:

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Note: The Lifetime Subscription only applies to Substack, Locals, and the Lunduke Journal Forum. Other platforms (such as X, Patreon, & YouTube) do not provide the functionality necessary to create Lifetime Subscriptions.

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Last Week on The Lunduke Journal - Fri, Dec 12, 2025

This last week has been, as usual, a doozy for Tech News.

The Mozilla Annual Report dropped, The EU & UK ramped up their war on US Free Speech, and the future of Rust in Linux was cemented (for better or worse).

But the most widely viewed, and yelled about, story of the week — by far — was “Prisma Drops Rust for Javascript, Sees Massive Speed Increase”. I tell ya, followers of the Church of Rust get grumpy if you utter anti-Rust blasphemy!

Oh, and a quick reminder: Lifetime Subscriptions can be snagged for $89 through the end of December. Monthly & Yearly subscriptions are 50% off as well. Just because.

All Shows From the Last Week

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