Does anyone have (or know where I can get) OLD MAC SE20 Systems Disk (Ver. 6.x) ?? I have a wonderful old Mac that I want to boot up, but it only boots to the last screen I was using several years back. Mouse and Keyboard do not respond so I think I need to reboot with system disks (which my kiddos lost!). Please help. write email@example.com if you can help. Thanks!