Windows installation invisible in BIOS after Bazzite install

I installed Bazzite on my other NVME drive but my Windows install won’t show up in the BIOS anymore. I disabled secure boot initially when installing Bazzite since I got a permanent black screen but I’m pretty sure it disappeared in the BIOS when I first installed Bazzite. I have Secure Boot enabled again and it’s working in Bazzite but Windows is still gone. I tried regenerating Grub and it’s still gone. I’m trying to get it back without having to use repair on installation media since my Windows is debloated so I’m not sure if that will install things I’ve already omitted or gotten rid of after. I’ve never had 2 operating systems on 2 different drives so this is new territory for me and I’m seeing various suggestions online, I’m not sure what I should try first after regenerating Grub. What is the safest way for me to get it to show again without having to repair or reinstall Windows?
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