This Video explains how to install ReactOS on hardware without burning CDs, USB Boot Sticks or tinkering with PXE booting.
The Command is from the link below:
https://www.serverwatch.com/server-tutorials/using-a-physical-hard-drive-with-a-virtualbox-vm.html
You require about 256MB of RAM (depending on the host) and ether a 2nd hard disk or an option to boot from any other boot medium.
You dont need to use Windows XP, you can do this also through a dual booted linux or a linux from livecd/liveusb preferably with a persistent mode so you dont have to set all up again.
I prefer Windows XP, because i can cross test applications and drivers and copy files from Windows XP if needed.
You get the idea. If you need help or something is unclear, feel free to ask.
You can also ask in the unofficial ReactOS Discord Server:
https://discordapp.com/invite/Dx2BnvS
Song: Raven & Kreyn - Get This Party [NCS Release]
Music provided by NoCopyrightSounds.
Watch: https://www.youtube.com/watch?v=9phWj...
Download/Stream: http://ncs.io/GetThisPartyYO