Minimal Linux Bootloader (2018)

https://raw.githubusercontent.com/Stefan20162016/linux-insides-code/master/bootloader.asm

58•1vuio0pswjnm7•9h ago

Comments

1vuio0pswjnm7•9h ago

This is Bootloader ID #11 with comments

See:

http://sebastian-plotz.blogspot.de

https://docs.kernel.org/arch/x86/boot.html

not_your_vase•8h ago

  > Blog nicht gefunden.

Ahhh, after looking harder, I see the typo

https://sebastian-plotz.blogspot.com/

secure•6h ago

I use this bootloader in gokrazy and blogged about debugging a limitation in it a while ago: https://michael.stapelberg.ch/posts/2024-02-11-minimal-linux...

D4ckard•8h ago

I love MBR hacking, it's so fun to see. Cf. sector lisp [1] and OSle [2].

[1]: https://github.com/jart/sectorlisp

[2]: https://news.ycombinator.com/item?id=43866585

micw•7h ago

Do I see it right that I need to recompile and reinstall it on each new kernel?

M95D•7h ago

I don't see how this is better than lilo.

WalterGR•7h ago

It’s not meant to be full-featured. It shows how to write a bootloader that’s smaller than 512 bytes.

6SixTy•7h ago

It's not supposed to be better than lilo, just code golf. Limine is pretty much the only serious bootloader gunning for the spot lilo/elilo was going for.

6SixTy•7h ago

Kind of cool, but being exclusively for BIOS/MBR kind of kills my excitement.

seba_dos1•6h ago

With EFI, you can just boot straight into Linux without any bootloader.

NewJazz•6h ago

Technically there's a pe shim, no?

cyberax•5h ago

You can just package Linux as a PE executable.

nine_k•6h ago

Yes. BIOS. Real mode. Not that I've been missing them these 30 years, and they are still in place. It gives a weird feeling.

I mean, if you target ancient baroque hardware like e.g. ZX Spectrum, you specifically target an ancient machine. But this is expected to work on any modern x86 hardware, while it feels like code for a 80286, and likely would run there. And this ancient stuff is still supported and actively used.

musicale•3h ago

> this ancient stuff is still supported and actively used.

It sort of warms my heart that code for the IBM 360 (now IBM Z) and the IBM PC (now x86 PC) can still run on modern hardware decades later.

On one hand, we're stuck with the legacy of the past. But on the other hand, we can build on things and don't need to reinvent them unnecessarily.

msla•3h ago

How much emulation is required to get System/360 code running on a modern IBM mainframe? Can the CPUs still run the original 32-bit code? Do CCWs and whatever other peripheral code still work?

I'd rather read the prompt

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Minimal Linux Bootloader (2018)

Comments

I'd rather read the prompt

Design for 3D-Printing

Helmdar: 3D Scanning Brooklyn on Rollerblades

On Not Carrying a Camera – Cultivating memories instead of snapshots

I turned a 40 year old Apple Mouse into a speech to text button

Show HN: My AI Native Resume

Graceful Shutdown in Go: Practical Patterns

Thunderscope update: My take: Why open source is better

Why Archers Didn't Volley Fire

Cyborg cicadas play Pachelbel's Canon

Dummy's Guide to Modern LLM Sampling

An Alabama landline that keeps ringing

TScale – Distributed training on consumer GPUs

Evidence of controversial Planet 9 uncovered in sky surveys taken 23 years apart

Technical analysis of TM SGNL, the unofficial Signal app Trump officials used

People are losing loved ones to AI-fueled spiritual fantasies

KaiPod Learning (YC S21) Is Hiring VP of Engineering

The complicated business of electing a Doge

A Hyper-Catalan Series Solution to Polynomial Equations, and the Geode

Oberon Pi

Minimal Linux Bootloader (2018)

Typed Lisp, a Primer

In kids, EEG monitoring of consciousness safely reduces anesthetic use

Censoring Social Media

Matrix-vector multiplication implemented in off-the-shelf DRAM for Low-Bit LLMs

Orders of Infinity

The Once and Future Genius

Load-Store Conflicts

Ask HN: Hackathons feel fake now

Critical Program Reading (1975) [video]