Back when I was just out of school, I worked as a computer tech guy. Our company got hired to test all the PC+BIOS version combinations a certain department had, to ensure they'd work after y2k.
Spent several weekends rigging up computers, and running a battery of tests on them.
Did actually find a handful of combos which misbehaved, mostly incorrectly handling the leap year IIRC. None of them had NTP running, so could have been an issue. A few didn't handle the transition well at all. Most got resolved by a BIOS update.
I recall thinking after 2000 came and went that sure, a fair share of superfluous work had probably been done, but the reason it seemed like such a nothingburger afterwards was because a lot of work went into ensuring exactly that.
Spent several weekends rigging up computers, and running a battery of tests on them.
Did actually find a handful of combos which misbehaved, mostly incorrectly handling the leap year IIRC. None of them had NTP running, so could have been an issue. A few didn't handle the transition well at all. Most got resolved by a BIOS update.
I recall thinking after 2000 came and went that sure, a fair share of superfluous work had probably been done, but the reason it seemed like such a nothingburger afterwards was because a lot of work went into ensuring exactly that.