Separate cartridges or disks for the OS, the various programs, the user files. When we switched over to internal storage and started putting everything togethe

Separate cartridges or disks for the OS, the various programs, the user files. When we switched over to internal storage and started putting everything together, the end user lost something. Children (people) need freedom to experiment but also need a way to put things back to square one, like they CAN'T mess the os up when it's on a write protected disk that's already been ejected.