>>1186715bro pls use google for these kinds of simpleton questions.
you can have two windows installations on the same hard drive, they have to be on different partitions and you select which one you want on boot
https://www.techadvisor.com/how-to/windows/how-dual-boot-windows-3633084/you can also have two different user accounts for your windows, separating drive space for each one thus differentiating your identity/programs/tranny porn/whatever
search for windows accounts management
