2 OS 2 Disks

Hey, I have a computer which is only used for school and can not run games. It is a HP Probook 6450b with the lowest configurations possible. I want to use Ubuntu instead of Windows, but I wan to keep all my data and have the possibillity to run Windows if I want to. I will be getting a new HDD to install linux on, and just take out the one with windows. If I install Linux on the other one, will I be able to run Windows again just by switching HDDs?
Help appreciated.
Foffkillz
Help appreciated.
Foffkillz