If you need to test multiple operating systems, Ventoy makes things incredibly easy. If you haven't tried it yet, you really should.

Curious about dual-booting on a PC? Learn what it is, how it works, and why running two operating systems might be worth trying.

Additionally, when you install Chrome OS Flex, it'll erase your computer's operating system and all the files on it.

Even having one operating system on our PC occupies a lot of disk space. In dual-booting, we need to have two operating systems that occupy a major chunk of your disk.

If the answer seems obvious, then it should be equally obvious that putting not one but two operating systems on the same device will make the user experience a complicated mess.