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The sick sad history of computer-aided collaboration

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Cake day: June 10th, 2025

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  • Read-only memory (ROM) is hardware, a chip, or an area on a chip. Flash storage used to store a system image is not read-only, but the term “ROM” has somehow creeped onto it. The definition of read-only in my opinion is that you have to use a separate device to write it, it can’t be writable by the device that uses it, it has to be write-protected in use.

    The operating system image colloquially called “custom ROM” is software (firmware) written to flash storage. It’s not read-only and it’s data, not memory hardware. If it were read-only, we wouldn’t need verified boot (bootloader locking) to detect malware edits in it.