I had rEFInd running fine previously. Then I updated to Mac OSX Mojave beta. After the update, rEFInd was missing.
So I just reinstalled it. However, it didn't work.
Went back to 10.13.5 fresh install and installed rEFInd. I still didn't work.
I tried everything, but I can't get it to work anymore. And the strangest thing is I can't even boot off a Linux USB drive. When I click on "EFI Boot" the MacBook starts Mac OSX.
So I installed Windows 10 with Boot Camp. That worked. Installed EasyUEFI there and added rEFInd to the system. Still didn't work.
The filesystem is APFS.
Does somebody know what the problem is?