Registered: Apr 2010
Distribution: Debian, Ubuntu, Fedora, RedHat, DSL, Puppy, CentOS, Knoppix, Mint-DE, Sparky, Vsido, tinycore, Q4OS
linux and windows together
You can run each on its own machine and run one keyboard with each hand.
You can run a dual boot one one hardware platform, and boot to yoru OS of the hour.
You can run one on the iron and the other as a virtual machine (in either order).
What is your real objective here, can you add detail?