> What is a dead operating system anyway No longer maintained / barely changing, like MS-DOS, Mac OS 9, Amiga OS (which does occasionally get an update but usu

> What is a dead operating system anyway No longer maintained / barely changing, like MS-DOS, Mac OS 9, Amiga OS (which does occasionally get an update but usually not much in the way of core changes) It's relevant because Windows is a moving target and the dead operating systems aren't so there's not a lot of support work needed for them nor will there be as much of a user base.