Provide a way in the settings to add TPM that doesn't break the BIOS
I have a Windows 10 install I would like to upgrade to Windows 11, so I followed this guide: https://www.ctrl.blog/entry/how-to-win11-in-gnome-boxes.html Except that afterward, the BIOS (and not the actual Windows install) gives me a boot device list and fails to detect anything installed. Maybe I could reinstall Windows at that point and it would find it again, but that's kind of unhelpful since I already have an install with data that I want to retain. Since I can just remove the TPM again and it works, clearly there was no data deleted and there's just something going wrong with how the TPM is inserted and the BIOS somehow not liking that.
Therefore, it would be nice if there was a TPM toggle that actually does this properly for pre-existing installs. While having it detected for new Windows 11 installs is nice, this doesn't help those who already have a VM they wish to upgrade.