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Cake day: June 21st, 2023

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  • The drive had a sensor that detected the notch status and either allowed (or not) the write ability.

    Basically the same as SD cards today, it’s just assumed that the drive will respect that switch.

    Older 5.25-inch floppies you would cut a notch in a specific place, and you could use tape to cover it and make it writable again.

    VHS and audio cassettes work the same way too.