Hi, I have a 2012 Mac Mini that came with a 128gb SSD and a 1TB spinning drive operating together as a Fusion Drive. Today I replaced the 128gb SSD with a new 1TB SSD in the SSD slot. I did not remove the old 1TB hard drive from the Mini. Should I have? Disk Utilities reports several read errors on the drive, so I don’t plan to use it. Is there a way to disable it, short of opening the system and disconnecting the cable?