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Computers · operating system

FreeDOS

Hacker Approved

Free DOS-compatible operating system for running old software, retro programming and legacy machines. Critics note it is weak on newer hardware, especially BIOS boot support and sound cards.

Summarized from 17 comments.

Free DOS-compatible operating system for running old software, retro programming and legacy machines. Critics note it is weak on newer hardware, especially BIOS boot support and sound cards.

recommend
12
criticize
2
months recommended
7 of 13

Why people love it

What people warn about

  • Poor BIOS boot support on new machines · 1

    FreeDOS is no good at all for booting anymore, since BIOS support is increasingly rare.

    Nov 2025 · comment
  • Awkward file transfer on modern machines · 1

    Used a USB floppy drive and moved files using floppies, which seemed appropriate for a DOS laptop, but was not very convenient.

    Nov 2025 · comment

Long-term owners

You can just boot freedos to run them, it will execute in real mode which has the same cpu instructions as 40 years ago.

Mar 2026 · comment

What hackers pick instead

Every quote

The 15 most detailed of 17 comments. Each links to the original.

  1. Used a USB floppy drive and moved files using floppies, which seemed appropriate for a DOS laptop, but was not very convenient.

    Mixed · Nov 2025 · in “Writerdeck.org”

  2. You can just boot freedos to run them, it will execute in real mode which has the same cpu instructions as 40 years ago.

    Recommends · Mar 2026 · in “Never Bet Against x86”

  3. Linux drivers and certification is a whole lot of extra work and complexity compared to FreeDOS

    Recommends · Apr 2026 · in “SDL Now Supports DOS”

  4. FreeDOS is no good at all for booting anymore, since BIOS support is increasingly rare.

    Mixed · Nov 2025 · in “Writing FreeDOS Programs in C”

  5. FreeDOS turns out to be the cheapest and easiest.

    Recommends · Apr 2026 · in “SDL Now Supports DOS”

  6. everywhere that you can boot up FreeDOS

    Recommends · Aug 2026 · in “Show HN: OpenTIE and OpenXWA, Modern Ports of Tie Fighter and X-Wing Alliance”

  7. Salvage old free as in freedom distros

    Recommends · Apr 2026 · in “US Bill Mandates On-Device Age Verification”

  8. I use it every day lately

    Recommends · Feb 2026 · in “I started programming when I was 7. I'm 50 now and the thing I loved has changed”

  9. I imagine FreeDOS might be a better one if you wanted to do hobby OSDev

    Recommends · Nov 2025 · in “Writing FreeDOS Programs in C”

  10. technically a modern, actively-supported DOS

    Recommends · Apr 2026 · in “SDL Now Supports DOS”

  11. FreeDOS is also not bad though

    Recommends · Mar 2026 · in “OpenCiv1 – open-source rewrite of Civ1”

  12. FreeDOS exists, no need for AI

    Recommends · Sep 2026 · in “Ask HN: Who's still keeping a DOS machine up because the business depends on it?”

  13. Snake and Tetris were fun!

    Recommends · Sep 2026 · in “MicroLLM Lab – Try 7 tiny LLM's in the browser”

  14. Another big problem for FreeDOS is the lack of sound card support.

    Criticizes · Nov 2025 · in “Writing FreeDOS Programs in C”

  15. the installer failed writing to disk

    Criticizes · Nov 2025 · in “Writing FreeDOS Programs in C”

Counts from 1,795,640 Hacker News comments, Nov 2025 to Nov 2026. How we count · Report a mistake