I'm new to Qubes. I installed it on a computer that has Windows, planning to keep the two OS, not because I like Windows, but because of paperwork I have to do from time to time and because I have to write on certain apps for college.
But Grub is not showing me Windows. It simply gives me the options of going to Qubes, Advanced booting on Qubes, and UEFI Firmware Settings. So, if I need Windows, I have to get into the latter, change the order of booting for the OSs and then I can work in Windows.
I've tried many things for long hours for three days now, including entering different commands on dom0, and the GNU nano to add entries manually to Grub, like here https://wwwtest.qubes-os.org/doc/multiboot/
Other solutions assume that my computer can go back to Legacy mode, and that's not the case, it only works with UEFI (A Lenovo I bought 3 months ago). So, certain apps that should fix the problem don't work, like EasyBCD, saying that it's due to restrictions imposed by Windows.
Finally, is it true that Windows could compromise Qubes security in my case?
Any ideas would be appreciated. Thanks for reading.