I followed Grid's guides, but he has several guides that all point to a final guide which involves creating rescue media from a Mac, which I don't have.

 

I have a Ryzen.

I have a working Sierra VM on my windows computer in VMWare, its a .VMDK file.

 

I tried to create the rescue media from the VM, but got a virtualization error. Something about running a vm inside a vm or something.

Search some of the earlier OS X vids he made (I think there are 3 total- seabios; ovmf; vmdk) 

 

It's there. It's easy.

I can make a vm from a .vmdk? That would be amazing. I looked into trying to turn it into an .img, but the few things I tried failed.

4 hours ago, RonUSMC said:

I can make a vm from a .vmdk? That would be amazing. I looked into trying to turn it into an .img, but the few things I tried failed.

KVM can handle quite a few vdisk formats (including .vmdk) so it MAY.work.   You do have to type in the full path to the .vmdk because the GUI does not allow you to select it as the GUI selector only shows a few of the vdisk formats supported by KvM.   The issue is whether the .vmdk you try and use is compatible with the hardware you define for the VM and has appropriate drivers included.   For instance the .vmdk almost certainly does not have any vfio drivers installed so you need to make sure your vdisk and network cards are emulating something the drivers in the image recognise.