I was planning on installing windows to my new ssd for a dualboot, but I noticed that windows installer didn’t allow me to select the disk. I learned that it just installs to the drive that is marked as M2_1 in the bios. I thought that had something to do with boot order initially, but I’m not sure about that now. If it is boot order, my second ssd doesn’t even show up in the boot order menu So:

1. Does windows install to whatever is second in boot order or whatever is marked as M2_1 in the bios, and
2. How can I edit this to prevent windows from nuking my main linux partition and using the empty ssd, and after the install, how should I make sure both drives are available to boot into?

Motherboard is MSI MS - 7E10