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Writing an operating system kernel from scratch

https://popovicu.com/posts/writing-an-operating-system-kernel-from-scratch/
60•Bogdanp•1h ago

Comments

lordleft•1h ago
I will never not find this kind of project incredibly impressive. It’s interesting to think that Linux, after all, is really just the kernel — and yet getting that work done paved the way to getting an open source version of Unix installed on billions of machines. Great stuff!
hollerith•1h ago
It is equally valid to say that Stallman's starting to write a C compiler and Unix utilities (in 1984 whereas the Linux project started in late 1991) paved the way to getting an open source version of Unix installed on billions of machines.
kimixa•17m ago
I agree - there's a number of kernels that were "open source" and released at a similar time enough time to linux (e.g. 386BSD in '92) that I could see any of those winning the "community battle" and taking that space instead, but no real credible "development toolchain" equivalent until decades later.

Though I'm unsure how differing licenses might have affected this - I suspect that really early in it's development the "copyleft" nature of the GPL Linux didn't make as much of a difference, as from what I remember most commercial uses of Linux didn't come until it had already gained significant momentum.

WD-42•46m ago
Zig really is amenable to OS development. And so is RISC-V. I started this same exercise except with x86 first. I quickly got annoyed with all the legacy boilerplate required. RISC-v doesn’t have any of that. It’s so much faster to get up and running. Here’s my bad zig: https://github.com/Fingel/aeros-v
toast0•24m ago
> with x86 first. I quickly got annoyed with all the legacy boilerplate required.

IMHO, if you use a reasonable bootloader, you don't have too much boilerplate. Multiboot loaders do leave you in real mode, and most people want to be in protected mode, so you have to set up some tables and do a jump, but that's not that much boilerplate. There's a bit more stuff if you disable legacy interrupt controllers (which you probably want to) but it seems to me being able to maybe run on a regular pc is worth it (caveats about console interfaces apply... my hobby OS needs bios boot and uses some vga things that I found aren't well supported... serial console is easier, but lots of computers don't have a serial port either)

chris_wot•33m ago
How does one get their hands on low-cost RISC hardware?
Rzor•19m ago
There's this $10 board on Aliexpress called Milk-V Duo S. It's been popping up on my recs every now and then. Looks interesting.

https://aliexpress.com/w/wholesale-Milk%2525252dV-Duo-S.html

Taken directly from its description:

>Milk-V Duo S is an upgraded model of Duo with an upgraded SG2000 master with a larger 512MB RAM and extended IO capability

>Onboard WI-FI6/BT5(Model Milk-V-Duo-S-512M-Basic/Milk-V-Duo-S-512M-eMMC does not have this function)

>USB 2.0 HOST port

>100 Mbps Ethernet Portwith PoE Support (via PoE HAT)

>Dual MIPI CSI with ISP

>The device also supports switch between RISC-V and ARM boot via a switch

Musicolour.art

https://musicolour.art/
1•gdss•3m ago•1 comments

AI Use Is Being Driven by People Who Understand It the Least

https://www.wsj.com/tech/ai/ai-adoption-study-7219d0a1
1•jonbaer•5m ago•0 comments

Show HN: I made an app that solves movie discovery

https://movieloop.eu/
1•AljazHisoft•12m ago•0 comments

Oklch()

https://developer.mozilla.org/en-US/docs/Web/CSS/color_value/oklch
2•redbell•12m ago•0 comments

Search for organizations and people that have paid Supreme Court justices

https://projects.propublica.org/supreme-connections/
2•mooreds•13m ago•0 comments

LM Studio subreddit has been hacked

https://old.reddit.com/r/LMStudio/
1•aquir•13m ago•1 comments

Tag2upload in the first month of Debian forky

https://diziet.dreamwidth.org/20143.html
2•Bogdanp•14m ago•0 comments

The founder of ID.me on war, vocation, and identity

https://joincolossus.com/article/pathfinder-blake-hall/
1•mooreds•15m ago•0 comments

Airbus, Thales, Leonardo could sign first deal this year on satellite tie-up

https://www.reuters.com/business/aerospace-defense/airbus-thales-leonardo-could-sign-first-deal-t...
1•giuliomagnifico•16m ago•0 comments

A dev portfolio ranking tool

https://rankmyportfolio.vercel.app/
1•javierbuilds•17m ago•0 comments

Not Reading the News – Mo's Blog

https://mo42.bearblog.dev/on-not-reading-the-news/
1•janandonly•20m ago•0 comments

Karen Hao on the Empire of AI, AGI evangelists, and the cost of belief

https://techcrunch.com/2025/09/14/karen-hao-on-the-empire-of-ai-agi-evangelists-and-the-cost-of-b...
2•danielmorozoff•21m ago•0 comments

Michelangelo to Banksy: The art that was erased

https://www.bbc.com/culture/article/20250912-the-controversial-artworks-erased-from-history
2•pseudolus•23m ago•0 comments

Try Galaxy

https://trygalaxy.com/
1•redbell•24m ago•0 comments

Anti-Israel protests force early end to Vuelta a España cycle race

https://www.reuters.com/sports/pro-palestinian-protests-disrupt-end-vuelta-cycle-race-2025-09-14/
6•aarroyoc•28m ago•1 comments

Online RL for Cursor Tab

https://cursor.com/en/blog/tab-rl
1•madmax108•29m ago•0 comments

Js1024 Revisited in 2025

https://www.i-programmer.info/news/167-javascript/18312-js1024-revisited-in-2025.html
1•thunderbong•29m ago•0 comments

Young activists who toppled Nepal's government now picking new leaders

https://www.reuters.com/world/asia-pacific/young-activists-who-toppled-nepals-government-now-pick...
3•JumpCrisscross•33m ago•0 comments

Show HN: Yobio – A super fast, clean Link-in-Bio tool

https://www.yobio.link/
1•FabianJani•33m ago•0 comments

Show HN: Fiverr for AI Agents (Sokosumi)

https://www.sokosumi.com
2•Padierfind•33m ago•0 comments

New catalyst could make mixed plastic recycling a reality

https://phys.org/news/2025-09-catalyst-plastic-recycling-reality.html
2•PaulHoule•36m ago•2 comments

Charlie Kirk shooting suspect not cooperating authorities Utah governor says

https://www.reuters.com/world/us/charlie-kirk-shooting-suspect-not-cooperating-with-authorities-u...
1•Bender•37m ago•0 comments

Apple Unveils iPhone Memory Protections to Combat Sophisticated Attacks

https://www.securityweek.com/apple-unveils-iphone-memory-protections-to-combat-sophisticated-atta...
2•Bender•38m ago•0 comments

Remote CarPlay Hack Puts Drivers at Risk of Distraction and Surveillance

https://www.securityweek.com/remote-carplay-hack-puts-drivers-at-risk-of-distraction-and-surveill...
1•Bender•39m ago•0 comments

XAI lays off workers tasked with training Grok

https://www.businessinsider.com/elon-musk-xai-layoffs-data-annotators-2025-9
3•jdale27•40m ago•1 comments

What Happened to Mexico City's Food Scene? Americans

https://www.nytimes.com/2025/09/08/dining/mexico-city-food-restaurants.html
2•mooreds•41m ago•1 comments

How I made cycling fun again

https://proofinprogress.com/posts/2025-09-14/how-i-made-cycling-fun-again.html
1•timdaub•43m ago•1 comments

Fun with Google Scholar

https://diffuse.one/p/d2-003
1•ashvardanian•45m ago•0 comments

Common Postgres Row-Level-Security Footguns

https://www.bytebase.com/blog/postgres-row-level-security-footguns/
1•shangxiao•48m ago•0 comments

Lucia Joyce

https://en.wikipedia.org/wiki/Lucia_Joyce
1•petethomas•48m ago•0 comments