keirf/greaseweazle on Hacker News

…near a concern; most likely they're still fine, and will typically not destroy anything. 0. https://github.com/keirf/greaseweazle

comment by snvzz · 2026-09-09 · in Ask HN: 3.5 inch diskette read errors, would a period correct drive do better?

…it's at now. KryoFlux was all we had before, but GW has overtaken it, and is open source proper. 0. https://github.com/keirf/greaseweazle

comment by snvzz · 2026-09-09 · in Ask HN: 3.5 inch diskette read errors, would a period correct drive do better?

The best (and most flexible) way to get data of old floppies is https://github.com/keirf/greaseweazle which reads the data at a raw magnetic level using a standard floppy drive and a custom open source circuit board which replaces the host…

comment by VorpalWay · 2026-08-14 · in Donkey.bas is 45 Years Old – 131 line of Glory

…a wide variety of graphics and sound hardware, and effectively have drivers compiled into them. [0] https://github.com/keirf/greaseweazle

comment by snerbles · 2026-06-20 · in DOS Game "F-15 Strike Eagle II" reversing project needs DOS test pilots

Indeed, some create master disk images with forensic tools, and physical drives: https://github.com/keirf/greaseweazle Then use clean disk images on USB floppy emulators for old equipment: https://github.com/keirf/flashfloppy It is rare to…

comment by Joel_Mckay · 2026-05-30 · in What It Takes to Preserve Floppy Disks

…over c-64 tcp-ip) : https://en.wikipedia.org/wiki/Filesystem_in_Userspace [2] greaseweazle : https://github.com/keirf/greaseweazle

comment by sargstuff · 2026-02-27 · in Show HN: Unix for the Commodore 64? Open Source

▲ 1

Greaseweazle Host Tools: accessing a floppy drive at the raw flux level

story by doener · 2025-12-17 · 0 comments

I'd suggest grabbing a greaseweazle[0] ahead of that. 0. github.com/keirf/greaseweazle/

comment by snvzz · 2025-11-01 · in Floppy Disk / Diskettes // retrocmp / retro computing

…- February 2024 (23 comments) https://wiki.techtangents.net/wiki/Floppy_Disk_Imaging https://github.com/keirf/greaseweazle https://kryoflux.com/

comment by toomuchtodo · 2025-10-16 · in The people rescuing forgotten knowledge trapped on old floppy disks

…if the floppies are DD. Don't wait for it to become unreadable. Backup now rather than later. 0. https://github.com/keirf/greaseweazle/

comment by snvzz · 2025-08-30 · in The No-CPU Amiga Demo Challenge

…something like a Greaseweazle[1] and go that route if you want to do more advanced extraction. [1] https://github.com/keirf/greaseweazle

comment by mmmlinux · 2024-08-26 · in Emulating the Early Macintosh Floppy Drive

Also https://github.com/keirf/greaseweazle

comment by Lammy · 2024-08-25 · in Emulating the Early Macintosh Floppy Drive

▲ 25

Greaseweazle: Tools for accessing a floppy drive at the raw flux level

story by transpute · 2024-07-28 · 6 comments

…and FluxEngine[1]. They are also cheap and effective, based on off-the-shelf parts. 0. https://github.com/keirf/greaseweazle/wiki 1. https://cowlark.com/fluxengine/index.html

comment by snvzz · 2024-07-06 · in Preserving a floppy disk with a logic analyzer and a serial cable

…drives with regular disk copy software. These days, there is the delightfully named Greaseweazle ( https://github.com/keirf/greaseweazle ) and similar devices to _read_ disks at a magnetic level, but I'm not sure if there is something to…

comment by MenhirMike · 2024-05-23 · in The Space Quest II Master Disk Blunder

Take a look at the Greaseweazle https://github.com/keirf/greaseweazle to see what a really high-end solution in this space looks like. It's intended as a from scratch alternative to the better-known KryoFlux.

comment by zozbot234 · 2023-12-19 · in Bit banging a 3.5" floppy drive

Better yet, GreaseWeazle[0]. 0. https://github.com/keirf/greaseweazle/

comment by snvzz · 2023-10-25 · in Origins of the 3.5in Floppy Disk [video]

…to seeing what I can dig up... Hopefully the disks are still vaguely-readable after ~40 years! [0] https://github.com/keirf/greaseweazle/wiki

comment by amatecha · 2023-09-06 · in Time to preserve those floppy disks

…an stm32 blue pill laying around) it will allow you to create a disk image of the disks over usb https://github.com/keirf/greaseweazle

comment by bogantech · 2023-09-04 · in Everything I know about floppy disks

…be a fun little project for anyone with hobbyist-level EE skills. [edit] This might be your ticket: https://github.com/keirf/greaseweazle/wiki (Someone just posted this in another comment)

comment by gary_0 · 2023-09-04 · in Everything I know about floppy disks

…implements encoding/decoding of a lot of formats. 0. http://lclevy.free.fr/adflib/adf_info.html 1. https://github.com/keirf/greaseweazle/wiki

comment by snvzz · 2023-09-04 · in Everything I know about floppy disks

…an older, non-openhardware solution. These days, there's GreaseWeazle[0], setting the standard. 0. https://github.com/keirf/Greaseweazle

comment by snvzz · 2023-08-06 · in 5.25“ Floppy Disk Imaging Manual (2018) [pdf]

Note that the SCP raw flux format can be read/written with the open source GreaseWeazle[0]. 0. https://github.com/keirf/greaseweazle/wiki/Supported-Image-T...

comment by snvzz · 2023-05-28 · in A Multi-Format Cross-Platform Floppy for 5.25“ Floppy Day

…with modern computers, handling custom formats, the excellent GreaseWeazle, also Keir Fraser's: https://github.com/keirf/greaseweazle

comment by snvzz · 2023-03-07 · in The floppy disk just won’t die

…that actually reads the magnetic flux transitions on the disks to extract the data within. https://github.com/keirf/greaseweazle

comment by cbm-vic-20 · 2023-02-03 · in Fun Fact: I own porn I can't watch

On a similar note, I just bought a Greaseweazle. Floppy disc to USB capture. https://github.com/keirf/greaseweazle I've been through some childhood 5 1/2 inch floppies. Some still work. Found some old BBC BASIC programs. Very nostalgic.

comment by afandian · 2023-01-27 · in Fake Parallel Printer – A Parallel Port Traffic Capturing Tool

…Greaseweazle[0] for a much more powerful solution using a microcontroller of similar cost. 0. https://github.com/keirf/greaseweazle

comment by snvzz · 2023-01-14 · in “DrawBridge” Lets You Read and Write to Amiga Floppy Disks

…tracker format. There is software to play tracker files but I don't know about that myself. [1] https://github.com/keirf/greaseweazle [2] https://amitools.readthedocs.io/en/latest/tools/xdftool.html [3] https://www.amigaforever.com/ae/

comment by bogantech · 2022-12-20 · in Amiga Forever

…controller in a new motherboard in a very long time. I use GreaseWeazle[0] for my floppy needs. 0. https://github.com/keirf/greaseweazle/wiki

comment by snvzz · 2022-08-10 · in Area 5150: 8088 MPH gets a successor

▲ 2

Greaseweazle: Open-source USB device and host tools for floppy drives

story by 32bitkid · 2022-07-11 · 0 comments

I'd suggest the Greaseweazle, which lets you use a PC and PC drive. https://github.com/keirf/Greaseweazle I haven't tested this, it's on my to do list.

comment by pronoiac · 2022-05-21 · in The Atari 800XL

…personal use. The Greaseweazel has a comparable feature set and doesn't limit user freedom. [0] https://github.com/keirf/greaseweazle

comment by EvanAnderson · 2022-01-29 · in Preserving a floppy disk with a logic analyzer and a serial cable

…Here's an STM32 fake that "works", but has various issues (some serious) listed near the bottom: https://github.com/keirf/Greaseweazle/wiki/STM32-Fakes Somewhat funny, the very bottom of the page above mentioned that "Note that this chip…

comment by tyingq · 2021-06-14 · in The global chip shortage is creating a new problem: More fake components

…(also no longer made) or a KryoFlux (the nuclear option and not open source). Greaseweasel ( https://github.com/keirf/Greaseweazle ) has come along recently as an open source catweasel. (the pcb design files are there too, just buried away…

comment by Brian_K_White · 2021-04-01 · in Raspberry Pi Floppy Controller Board

…Greaseweazle - Tools and USB interface for accessing a floppy drive at the raw flux level. https://github.com/keirf/Greaseweazle https://www.retrocomputers.online/greaseweazle-flux-level-fl... FC5025 USB 5.25" Floppy Controller…

comment by FlyMoreRockets · 2021-01-07 · in USB floppy controller for Amiga disks

…not much more: http://amiga.robsmithdev.co.uk/ STM32-based, can deal with pretty much everything: https://github.com/keirf/Greaseweazle/wiki

comment by snvzz · 2021-01-07 · in Writing 800kB Mac disks with FluxEngine

You forgot https://github.com/keirf/Greaseweazle

comment by Chol · 2020-04-25 · in FC5025 USB 5.25” Floppy Controller