It says "There is no USB drive connected to the system. Please connect a USB drive to continue."
but I have seen in all the videos online that they do not need an external drive for this. I want to use the Mac's inbuilt hard drive as I have 900 gigs free..
I'm using a late 2014 Mac mini on a 2.6 GHz Dual core intel i5 8gigs ram
Mac mini, 11.2