Comment by retrac

Comment by retrac 16 hours ago

9 replies

You might be able to use that old floppy drive. But you won't be able to use that old Pentium machine the drive is in.

Because you will need several hundred gigabytes of RAM and a very fast IO bus.

The gold standard today for archiving magnetic media is to make a flux image.

The media is treated as if it were an analog recording and sampled at such a high rate that the smallest details are captured. Interpretation is done later, in software. The only antique electronics involved are often the tape or drive head, directly connected to a high speed digitizer.

And indeed that appears to be the plan Al Kossow has for the tape: https://www.tuhs.org/pipermail/tuhs/2025-November/032765.htm...

As for CDs, I don't see the rush; the ones that were properly made will likely outlast human civilization.

squarefoot 8 hours ago

> As for CDs, I don't see the rush; the ones that were properly made will likely outlast human civilization.

Printed ones will last a lot more, but writable ones will degrade to unreadable state in a few years. I lost countless of them years ago, including the double backup of a project I worked on. Branded disks written and verified, properly stored, no sunlight, no objects or anything above them, no moisture or whatever. All gone just because of time. As I read other horror stories like mine, I just stopped using them altogether and never looked back.

fsckboy 16 hours ago

>As for CDs, I don't see the rush; the ones that were properly made will likely outlast human civilization.

recordable CD-Rs or DVD-Rs do not last close to that long, and those are the ones that hold the only copies of certain bits (original versions of software, etc) that people are most interested in not losing.

manufactured CDs and DVDs hold commericial music and films that are for the most part not rare at all.

  • accrual 15 hours ago

    Yes, good distinction. Recordable media will most likely contain data an individual intended to save. But because it's recordable, the dyes and structures on the disc aren't as stable.

    Long-lasting, good quality mastered optical media is probably mass produced and has many copies, including a distinct and potentially well-preserved source.

    It's probably fair to say that a lot of mixtapes (mix CDs?) from the early 2000s are lost to dye issues...

    • quantummagic 12 hours ago

      > lost to dye issues...

      Not that it helps to recover older data, but things are better with Blu-ray today; at least if you buy decent quality discs. Advertised lifespans are multiple decades, up to 100 years, or even 500 years for "M" discs. And in the "M" disc case, it's achieved by using a non-organic dye, to avoid the degradation issues.

    • themafia 10 hours ago

      > structures on the disc aren't as stable.

      Which is why the format has generous error correction built in.

easyThrowaway 4 hours ago

'that were properly made' is doing a lot of work in that sentence. I've got a bunch of Sega Saturn and AKAI/Zero-G sample cds that are basically unreadable already due to disc rot. There was a lot of cheaply made optical media floating around in the late '90s.

  • noir_lord 4 hours ago

    and anything you "burnt" yourself has an even shorter life.

    In many ways our storage media has become more ephemeral as capacities have increased - except LTO at least which seems to keep up with storage demands/price and durability, LTO is eternal (or long enough to be able to move it from LTO-(N-4) to LTO-N at least).

padjo 6 hours ago

It’s so obvious in retrospect but I never considered they would do this! Thanks for sharing.

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