Note to self
When your computer tells you that the CMOS checksum was incorrect and it’s reset to defaults, it may be a good idea to go in and at least set the time and date to something vaguely correct, to avoid having the filesystem checks kick in twice: First when it’s confused about going back in time a few years, and again after you’ve corrected the time and it goes forward in time a few years, both times saying “Well, it’s been too long since the last time, I better check”, even though of course the system was rebooted without crashes or anything.
Gah. And with that 1TB that I have here now, it takes a while! 