Basically any computers from the mid 90s and earlier perform a slow memory check on every single boot. The more memory there is present, the slower that process becomes, for example: https://www.youtube.com/watch?v=A3Po8zneaLE
Why are they doing that? Modern computers, as far as I am aware of, only check their memory when explicitly told to. What exactly are retro computers doing during that check that more modern computers seem to not do and why?
