Legacy/Duet: no ESP on HDD detected

I've been trying to use the Duet forks of both OpenCore and Clover not only for hackintoshing but also to boot Windows in UEFI mode on an old Dell PC with an existing but faulty UEFI implementation. OpenCore displays no Windows boot entry even though Windows is installed and when booting OpenCore through native UEFI, it does show Windows and on the Clover stick that I created with BootDiskUtility, if I check under boot from file, it shows no devices to select a filesystem to boot a file from. I think that this might be related to why I could never boot the macOS recovery

Author: @Deathscyther1HD