PC only boots into clover with USB

I know this has been asked before, and I know I've solved it myself too, but I forget how!

I have a laptop with High Sierra, Windows 10, and Ubuntu Linux all installed on one hard drive.

With the clover USB stick inserted and booting from it, all the entries show up! MacOS, Ubuntu, and Windows 10. It works beautifully, they all boot.

But of course, with no USB inserted, booting from the hard drive, the laptop boots into windows 10 automatically, no clover.

I have already looked into the BIOS, and there is only the option to choose my hard drive as the boot drive, no specific partitions.

I have tried copying the EFI from the USB stick to the Hard Drive, and of course then clover Does boot, but all of my entries (windows and Linux) besides macOS are erased, and then I can only boot into macOS.

I know it's simple but I can't find the answer searching around and just can't seem to figure it out on my own either.

I'm this close to having my triple-boot high sierra laptop complete, just would like to use it without the USB stick in it all the time.