I have a Mac Mini 2014. I just installed a second SSD drive Samsung Evo 500GB and would like to use as the primary drive for OS.
I formatted both drives with disk utility to OS Extended Journaled and clicked install Mojave but got this error.
If I format the drive as APFS, the installation starts but after the restart, I get a blinking folder with a question mark. If I try to install from an external USB, instead of the folder with a question mark, I get booted into Recovery again instead of continuing the installation process.