A Linux Distribution For DOOM

June 9, 2022 by Bryan Cockfield 40 Comments

If you’ve gone further into the Linux world than the standard desktop distributions like Ubuntu or Fedora, you have undoubtedly come across some more purpose-built distributions. Some examples are Kali for security testing, DragonOS for software-defined radio, or Hannah Montana Linux for certain music fans. Anyone can roll their own Linux distribution with the right tools, including [Shadly], who recently created one which only loads enough software to launch the 1993 classic DOOM.

The distribution is as simple as possible and loads no bloat other than what’s needed to launch the game. It loads the Linux kernel and the standard utilities via BusyBox, then runs fbDOOM, which is a port of the game specifically designed to run on the Linux framebuffer with minimal dependencies. After most of that, the only thing left is to use GRUB to boot the distribution, and in just a moment, Doomguy can start slaying demons. The entire distribution is placed into a bootable ISO file that can be placed on any bootable drive.

As far as DOOM hacks go, we’re used to seeing the game running on hardware it was never intended for like the NES or on an office phone. This one, on the other hand, gives us a little more insight into just how little is needed for a full-fledged Linux distribution, as long as what you need to do is relatively straightforward.

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Arduino IDE Creates Bootable X86 Floppy Disks

January 12, 2022 by Tom Nardi 71 Comments

Arguably the biggest advantage of the Arduino ecosystem is how easy it is to get your code running. Type a few lines into the IDE, hit the button, and in a few seconds you’re seeing an LED blink or some text get echoed back over the serial port. But what if that same ease of use didn’t have to be limited to microcontrollers? What if you could use the Arduino IDE to create computer software?

That’s exactly what boot2duino, a project developed by [Jean THOMAS] hopes to accomplish. As you might have guessed from the name, the code you write in the Arduino is turned into a bootable floppy disk image that you can stick into an old PC. After a few seconds of beeping and grinding your “Hello World” should pop up on the monitor, and you’ve got yourself the world’s biggest Arduino.

Now to be clear, this isn’t some kind of minimal Linux environment that boots up and runs a compiled C program. [Jean] has created an Arduino core that provides basic functionality on x86 hardware. Your code has full control over the computer, and there’s no operating system overhead to contend with. As demonstrated in a series of videos, programs written with boot2duino can display text, read from the keyboard, and play tones over the PC’s speaker.

The documentation for boot2duino says the project serves no practical purpose, but we’re not so sure. While the feature set is minimal, the low overhead means you could theoretically press truly ancient PCs into service. There’s certainly an appeal to being able to write your code on a modern OS and effortlessly deploy it on a retrocomputer, from somewhat modernized versions of early computer games to more practical applications. If any readers end up exploring this concept a bit further, be sure to let us know how it goes.

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Show Your Skills With A Bootable CV

March 23, 2019 by Jenny List 10 Comments

It’s a thankless task, searching for a job. You send off your CV, or resume, and it joins a thousand other destined for the round file. What on earth can you do to make your career stand out, and catch the eye of the recruiter?

Your bootable CV isn't eye-catching if the recruiter uses GitHub to view the PDF. — Your bootable CV isn’t eye-catching if the recruiter uses GitHub to view the PDF.

If you are [Pablo Jiménez Mateo], the answer is straightforward enough. Simply combine the document as a PDF with an x86 bootloader, to make a readable document that will also boot an x86 computer system. He can do this relatively easily by prepending the bootloader file to the PDF, as long as the “%PDF” header of the CV remains within the first 1024 bytes it will remain a readable document. Which it does, though as our GitHub screenshot shows, not in all PDF readers.

A bootable PDF is pretty cool and we have to salute his effort in getting it in front of us in the hope of career boost, but it would be fair to admit that it’s a trick that has been done before. So it’s time to turn attention to the bootloader itself, whose code comes in the form of an extremely well-commented assembly file that loads some sprites and a border to a VGA screen that looks as though it might be the first room in a top-down adventure game. Through the code we can gain an appreciation of just how simple a bootloader can be, and that in itself makes this project worth a second look.

If writing your own bootloader interests you, that’s certainly a subject we’ve covered in the past. It’s possible to make bootable images very small indeed, even down to fitting in a Tweet.

Helix V2.0 Released

October 2, 2008 by Caleb Kraft 20 Comments

Helix 2.0 has been released. Helix is a collection of various tools for electronic forensics. Just like on TV, you can use this to find all kinds of information on a computer. Some of the useful tools added were Winlockpwn a tool for breaking windows security, Volitility which processes data out of the raw memory, and several other tools that are beyond our comprehension.

You’ve undoubtedly noticed that the title says Helix V2.0, but the image and header of the Helix site say 3. We have no idea why. Look at the download info to see that it says V2.0.

[Via Midnight Research labs]