Secure Boot State Query in Powershell Confirm-SecureBootUEFI
Check EFI paritions - Disk Managment diskmgmt.msc
Refindboot manager https://www.rodsbooks.com/refind/installing.html#efibootmgr
Secure boot https://blogs.technet.microsoft.com/dubaisec/2016/03/14/diving-into-secure-boot/ https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/disabling-secure-boot
Visual BCD Editor https://www.boyans.net/DownloadVisualBCD.html
Changing Boot Manager Path - bcdedit https://superuser.com/questions/979695/windows-10-bcdedit-how-to-change-bootmgr-path