It was true at one point, but has since changed. The systems are totally air-gapped and worked 100% of the time, so there was never a reason to change them.

Also true: Boeing still uses floppies to update their 747s.

[–] atlasraven31@lemm.ee 7 points 1 year ago (1 children)

Yup, we don't want it to crash.

[–] kogasa@programming.dev 1 points 1 year ago (1 children)

Eh? You can verify bit for bit that a digital transfer off an SSD was successful.

[–] tilcica@lemm.ee 7 points 1 year ago* (last edited 1 year ago) (1 children)

yea but SSDs are not reliable enough. random bit flips from cosmic events, degradation of data if unpowered for a long time, can only be written to so many times

they are VERY reliable for casual PC use or even server storage but not for something that could start ww3 if it glitches

also, as some other people said, dont change something that already works

[–] kogasa@programming.dev 2 points 1 year ago

That has nothing to do with file transfer ("updating"), just long term storage. It's also a solved problem. You can solve it at the software level with modern self-healing filesystems.