I can't disable secure BOOT in bios so i can have linux and Windows

Support
1

My problem is simple,i need to deactivate secure boot,so i can have linux and windows,why?because if i have windows,and install linux,my pc will boot only to linux,and vice versa,the windows won’t unistall itself,i still can have the data,but i can’t acces it if the bios read the linux first,that means i need to disconect the SSD/M.2 everytime when i want to acces something(didn’t tested but i think like this will happen) i tried to be administrator and deactivate it ,no luck,deleted secure keys still no,its on enabled and gray,that means that i can’t enable/disable,i tried google,with a friend of mine that is good at pc’s and still no,i dont know,if someone knows about this,this is more a question about bios that Linux,but still if there is someone that has a idea how to bypass this ,please tell me

2

Because Manjaro does not support secure boot.

The Windows Bootloader needs to be installed without secure boot and the key at UEFI have to cleared. Then grub can boot windows.

3

can you please return

inxi -Fza 
test -d /sys/firmware/efi && echo efi || echo bios
sudo parted -l
sudo efibootmgr -v

in your UEFI , check carefully ( for linux without SecureBoot )

disable secure boot
disable fastboot
disks on AHCI
no legacy
no CSM
UEFI only or others ( not windows )
no optane/RST
no raid