Most computers come with just one operating system, which is usually all you need. However, if you feel like trying out a different one later, you don't need to get a whole new computer. Dual-booting ...
Ever heard of VENIX? There were lots of variants of Unix back in the day, and VENIX was one for the DEC Professional 380, which was — sort of — a PDP 11. The 1982 machine normally ran the ...