To clarify, during the time I asked the question and your response, I simply shrinked another volume and the installer automatically created a partition out of the unallocated space, so that issue is resolved.
But the information you gave on dual booting concerns me since I am dual booting Qubes and Windows 11 (encrypted via VeraCrypt, though I don’t think that makes any difference).
Now that I’ve already installed Qubes and am dual-booting, what should I do to maximize security?
I’m fine with uninstalling Windows 11 completely, although I’d prefer to do that somewhat later.
If I delete Windows, should I go through the process of installing Qubes again, or is there really no tangible difference?
Also, what’s the most secure way to actually get rid of Windows from my system, and would getting rid of Windows from my system also get rid of the product key that came alongside my laptop?