When my brother was killed in 2017, I inherited his Apple setup, including a 2012 Mac mini. Initially inclined to donate the computer, I decided to keep it as a reminder of the Apple-obsessed Frankie.

Google’s Chrome OS Flex is now ready to revive Macs that are too elderly to run the latest macOS version. That includes models as far back as 2010. It turns the Mac into a Chromebook, but at least ...