Clover Bootloader not finding macos without USB stick being plugged in

I'm struggling a bit guys and wandered if anyone can help. I've got my Hackintosh all working (whilst the USB stick is plugged in) and it allows me to either boot to High Sierra or Windows 10. The problem I have is, that If I unplug my USB stick, it only sees Windows 10.

This is what I've done.......

I copied my Clover folder from the EFI folder on my USB stick to the EFI folder on my HDD.........Now this is where I think the problem is. I then tried to install Clover to my HDD but it will only allow me to install it to my USB stick....When I try to change the installation path it shows my USB stick and HDD but on my HDD it has a yellow triangle on it and says I can't install it to that location.

Some people tell me you nee to do that other's tell me you don't.

How can I install Clover to my HDD so I can boot to it without having to have the USB always plugged in?

Thanks in advance